diff --git a/__test__/mockapi/widget_instances_get.json b/__test__/mockapi/widget_instances_get.json
index fc4753f4..7f5858f1 100644
--- a/__test__/mockapi/widget_instances_get.json
+++ b/__test__/mockapi/widget_instances_get.json
@@ -25,7 +25,6 @@
             "dir": "70-mental-rotation-body-parts/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Popup",
             "height": "600",
             "id": "70",
             "is_answer_encrypted": "1",
@@ -85,7 +84,6 @@
             "dir": "16-labeling/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "601",
             "id": "16",
             "is_answer_encrypted": "1",
@@ -149,7 +147,6 @@
             "dir": "16-labeling/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "601",
             "id": "16",
             "is_answer_encrypted": "1",
@@ -213,7 +210,6 @@
             "dir": "16-labeling/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "601",
             "id": "16",
             "is_answer_encrypted": "1",
@@ -277,7 +273,6 @@
             "dir": "13-last-chance-cadet/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "593",
             "id": "13",
             "is_answer_encrypted": "1",
@@ -340,7 +335,6 @@
             "dir": "8-enigma/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "548",
             "id": "8",
             "is_answer_encrypted": "1",
@@ -403,7 +397,6 @@
             "dir": "10-crossword/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "592",
             "id": "10",
             "is_answer_encrypted": "1",
@@ -466,7 +459,6 @@
             "dir": "8-enigma/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "548",
             "id": "8",
             "is_answer_encrypted": "1",
@@ -529,7 +521,6 @@
             "dir": "8-enigma/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "548",
             "id": "8",
             "is_answer_encrypted": "1",
@@ -592,7 +583,6 @@
             "dir": "8-enigma/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "548",
             "id": "8",
             "is_answer_encrypted": "1",
@@ -655,7 +645,6 @@
             "dir": "80-this-or-that/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "0",
             "id": "80",
             "is_answer_encrypted": "1",
@@ -719,7 +708,6 @@
             "dir": "16-labeling/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "601",
             "id": "16",
             "is_answer_encrypted": "1",
@@ -783,7 +771,6 @@
             "dir": "98-equation-sandbox/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "650",
             "id": "98",
             "is_answer_encrypted": "1",
@@ -846,7 +833,6 @@
             "dir": "12-hangman/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "620",
             "id": "12",
             "is_answer_encrypted": "1",
@@ -909,7 +895,6 @@
             "dir": "8-enigma/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "548",
             "id": "8",
             "is_answer_encrypted": "1",
@@ -972,7 +957,6 @@
             "dir": "64-what-do-you-believe/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Popup",
             "height": "600",
             "id": "64",
             "is_answer_encrypted": "1",
@@ -1032,7 +1016,6 @@
             "dir": "10-crossword/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "592",
             "id": "10",
             "is_answer_encrypted": "1",
@@ -1095,7 +1078,6 @@
             "dir": "9-flash-cards/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "516",
             "id": "9",
             "is_answer_encrypted": "1",
@@ -1158,7 +1140,6 @@
             "dir": "9-flash-cards/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "516",
             "id": "9",
             "is_answer_encrypted": "1",
@@ -1221,7 +1202,6 @@
             "dir": "9-flash-cards/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "516",
             "id": "9",
             "is_answer_encrypted": "1",
@@ -1284,7 +1264,6 @@
             "dir": "9-flash-cards/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "516",
             "id": "9",
             "is_answer_encrypted": "1",
@@ -1347,7 +1326,6 @@
             "dir": "10-crossword/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "592",
             "id": "10",
             "is_answer_encrypted": "1",
@@ -1410,7 +1388,6 @@
             "dir": "16-labeling/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "601",
             "id": "16",
             "is_answer_encrypted": "1",
@@ -1474,7 +1451,6 @@
             "dir": "9-flash-cards/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "516",
             "id": "9",
             "is_answer_encrypted": "1",
@@ -1537,7 +1513,6 @@
             "dir": "9-flash-cards/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "516",
             "id": "9",
             "is_answer_encrypted": "1",
@@ -1600,7 +1575,6 @@
             "dir": "9-flash-cards/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "516",
             "id": "9",
             "is_answer_encrypted": "1",
@@ -1663,7 +1637,6 @@
             "dir": "10-crossword/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "592",
             "id": "10",
             "is_answer_encrypted": "1",
@@ -1726,7 +1699,6 @@
             "dir": "10-crossword/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "592",
             "id": "10",
             "is_answer_encrypted": "1",
@@ -1789,7 +1761,6 @@
             "dir": "10-crossword/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "592",
             "id": "10",
             "is_answer_encrypted": "1",
@@ -1852,7 +1823,6 @@
             "dir": "10-crossword/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "592",
             "id": "10",
             "is_answer_encrypted": "1",
@@ -1915,7 +1885,6 @@
             "dir": "18-adventure/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "593",
             "id": "18",
             "is_answer_encrypted": "1",
@@ -1982,7 +1951,6 @@
             "dir": "16-labeling/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "601",
             "id": "16",
             "is_answer_encrypted": "1",
@@ -2046,7 +2014,6 @@
             "dir": "10-crossword/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "592",
             "id": "10",
             "is_answer_encrypted": "1",
@@ -2109,7 +2076,6 @@
             "dir": "17-sequencer/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "548",
             "id": "17",
             "is_answer_encrypted": "1",
@@ -2172,7 +2138,6 @@
             "dir": "18-adventure/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "593",
             "id": "18",
             "is_answer_encrypted": "1",
@@ -2239,7 +2204,6 @@
             "dir": "13-last-chance-cadet/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "593",
             "id": "13",
             "is_answer_encrypted": "1",
@@ -2302,7 +2266,6 @@
             "dir": "18-adventure/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "593",
             "id": "18",
             "is_answer_encrypted": "1",
@@ -2369,7 +2332,6 @@
             "dir": "18-adventure/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "593",
             "id": "18",
             "is_answer_encrypted": "1",
@@ -2436,7 +2398,6 @@
             "dir": "18-adventure/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "593",
             "id": "18",
             "is_answer_encrypted": "1",
@@ -2503,7 +2464,6 @@
             "dir": "9-flash-cards/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "516",
             "id": "9",
             "is_answer_encrypted": "1",
@@ -2566,7 +2526,6 @@
             "dir": "18-adventure/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "593",
             "id": "18",
             "is_answer_encrypted": "1",
@@ -2633,7 +2592,6 @@
             "dir": "18-adventure/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "593",
             "id": "18",
             "is_answer_encrypted": "1",
@@ -2700,7 +2658,6 @@
             "dir": "18-adventure/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "593",
             "id": "18",
             "is_answer_encrypted": "1",
@@ -2767,7 +2724,6 @@
             "dir": "10-crossword/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "592",
             "id": "10",
             "is_answer_encrypted": "1",
@@ -2830,7 +2786,6 @@
             "dir": "18-adventure/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "593",
             "id": "18",
             "is_answer_encrypted": "1",
@@ -2897,7 +2852,6 @@
             "dir": "18-adventure/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "593",
             "id": "18",
             "is_answer_encrypted": "1",
@@ -2964,7 +2918,6 @@
             "dir": "8-enigma/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "548",
             "id": "8",
             "is_answer_encrypted": "1",
@@ -3027,7 +2980,6 @@
             "dir": "16-labeling/",
             "flash_version": "10",
             "api_version": "2",
-            "group": "Materia",
             "height": "601",
             "id": "16",
             "is_answer_encrypted": "1",
@@ -3091,7 +3043,6 @@
             "dir": "8-enigma/",
             "flash_version": "0",
             "api_version": "2",
-            "group": "Materia",
             "height": "548",
             "id": "8",
             "is_answer_encrypted": "1",
diff --git a/__test__/mockapi/widgets_get.json b/__test__/mockapi/widgets_get.json
index d61d22ed..cd1bd3f5 100644
--- a/__test__/mockapi/widgets_get.json
+++ b/__test__/mockapi/widgets_get.json
@@ -6,7 +6,6 @@
         "dir": "10-crossword/",
         "flash_version": "10",
         "api_version": "2",
-        "group": "Materia",
         "height": "592",
         "id": "10",
         "is_answer_encrypted": "1",
diff --git a/package.json b/package.json
index 265c83fa..f309c014 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "materia-server-client-assets",
-  "version": "2.0.0",
+  "version": "2.1.0-alpha3",
   "license": "AGPL-3.0",
   "description": "Materia Server Client Assets contains all the javascript and css for Materia Server and the Materia Widget Development Kit.",
   "author": "University of Central Florida, Center for Distributed Learning",
diff --git a/src/css/core.scss b/src/css/core.scss
index 5e31dec2..28b8c4c9 100644
--- a/src/css/core.scss
+++ b/src/css/core.scss
@@ -60,13 +60,26 @@ header {
 		background: #fff url(../../../img/header_border_alt.png) 0% 100% repeat-x;
 	}
 
+	ul,
+	p {
+		margin: 0;
+		padding: 0;
+	}
+
 	.avatar {
 		font-family: 'Lucida Grande', arial, serif;
+		right: 20px;
+		line-height: 0;
 
 		img {
-			width: 24px;
-			height: 24px;
-			display: block;
+			width: 35px;
+			height: 35px;
+			border-radius: 2px;
+		}
+
+		span {
+			position: absolute;
+			right: 32px;
 		}
 	}
 	.user {
@@ -76,13 +89,42 @@ header {
 		top: 36px;
 	}
 	.user.avatar {
-		top: 12px;
-	}
+		top: 24px;
 
-	ul,
-	p {
-		margin: 0;
-		padding: 0;
+		a {
+			font-size: 17px;
+			font-weight: bold;
+			font-family: 'Lato', arial, serif;
+			position: absolute;
+			top: 36px;
+			right: 5px;
+			width: 500px;
+			text-align: right;
+
+			span {
+				text-align: right;
+				position: absolute;
+				top: -28px;
+				right: 42px;
+				width: 500px;
+				font-size: 14px;
+			}
+			span:hover {
+				text-decoration: underline;
+			}
+
+			img {
+				position: absolute;
+				top: -35px;
+				right: 2px;
+			}
+		}
+		.logout a {
+			font-size: 14px;
+			top: 26px;
+			right: 18px;
+			font-weight: 400;
+		}
 	}
 }
 
@@ -144,7 +186,8 @@ nav {
 			display: inline;
 			padding: 0 10px 0 0;
 
-			&.logout a {
+			.logout a {
+				display: none;
 				position: absolute;
 				right: 20px;
 				bottom: 13px;
@@ -177,9 +220,25 @@ nav {
 		}
 
 		.user.avatar {
-			position: static;
-			display: inline-block;
+			right: 54px;
 			max-width: calc(100% - 185px);
+
+			span {
+				display: none;
+			}
+
+			a {
+				top: 18px;
+
+				img {
+					float: none;
+					margin: right;
+					height: 35px;
+					width: 35px;
+					border-radius: 3px;
+					top: -17px;
+				}
+			}
 		}
 	}
 
@@ -214,8 +273,9 @@ nav {
 					}
 				}
 
-				&.logout a {
-					font-size: 14px;
+				.logout a {
+					display: inline;
+					font-size: 17px;
 					position: static;
 				}
 
@@ -581,7 +641,7 @@ h3 {
 
 #notifications_link {
 	position: absolute;
-	right: 86px;
+	right: 120px;
 	bottom: 16px;
 
 	width: 30px;
@@ -617,8 +677,8 @@ h3 {
 	content: attr(data-notifications);
 	position: absolute;
 
-	top: -1.5em;
-	right: -1em;
+	top: 0.5em;
+	right: -1.25em;
 
 	min-width: 1.5em;
 	min-height: 1.5em;
diff --git a/src/css/my-widgets.scss b/src/css/my-widgets.scss
index 3070c90e..df3b70e5 100644
--- a/src/css/my-widgets.scss
+++ b/src/css/my-widgets.scss
@@ -255,6 +255,7 @@
 		font-weight: 900;
 		font-size: 25px;
 		padding-right: 10px;
+		word-break: break-all;
 	}
 	.page .header h2 {
 		margin: 0;
@@ -1208,6 +1209,10 @@
 	margin: 9px 0px 0px 0px;
 	padding: 0px 10px;
 	text-align: center;
+
+	p:not(.download) {
+		text-align: left;
+	}
 }
 
 .ng-modal.csv_popup div.score_table p.download a {
@@ -1219,7 +1224,7 @@
 	text-align: left;
 	padding: 0px 15px 0px 15px;
 	line-height: 1.5em;
-	margin-top: 40px;
+	margin-top: 20px;
 }
 
 .ng-modal.csv_popup h4 {
@@ -1278,7 +1283,6 @@
 	text-decoration: underline;
 }
 .ng-modal.csv_popup select {
-	margin-top: 30px;
 	margin-bottom: -10px;
 }
 .ng-modal.csv_popup table tr td {
diff --git a/src/css/util-lti-picker.scss b/src/css/util-lti-picker.scss
index e9a4c039..c0cbe22d 100644
--- a/src/css/util-lti-picker.scss
+++ b/src/css/util-lti-picker.scss
@@ -223,15 +223,8 @@ header > h1 {
 	bottom: 10px;
 }
 
-#list-container li .view-at-materia {
-	display: none;
-	position: absolute;
-	right: 20px;
-	top: 10px;
-}
-#list-container li:hover .view-at-materia,
-#list-container li.selected .view-at-materia {
-	display: block;
+#list-container li .searchable {
+	word-break: break-all;
 }
 
 #list-container li .embed-button {
@@ -243,6 +236,13 @@ header > h1 {
 #list-container li:hover .embed-button,
 #list-container li.selected .embed-button {
 	display: inline-block;
+
+	div {
+		display: inline-block;
+		width: 12px;
+		height: 12px;
+		background: url(../../../img/external_link_arrow_brown.png) 0% 0% no-repeat;
+	}
 }
 
 #select-widget .widget-icon {
diff --git a/src/css/widget-guide.scss b/src/css/widget-guide.scss
index b80a5985..202177d5 100644
--- a/src/css/widget-guide.scss
+++ b/src/css/widget-guide.scss
@@ -5,6 +5,8 @@
 		padding: 10px;
 		border-radius: 10px;
 		box-shadow: 1px 3px 10px #888;
+
+		font-family: 'Lato', arial, serif;
 	}
 
 	#top {
@@ -20,19 +22,19 @@
 
 			&.players-guide {
 				a:first-of-type {
-					background: #333;
+					background: #1778af;
 				}
 			}
 
 			&.creators-guide {
 				a:nth-of-type(2) {
-					background: #333;
+					background: #1778af;
 				}
 			}
 
 			a {
 				padding: 8px 15px;
-				background: lighten(#333, 20%);
+				background: #004268;
 				color: white;
 				border-radius: 10px 10px 0 0;
 				margin: 15px 0 0 10px;
@@ -46,7 +48,7 @@
 			width: 100%;
 			box-sizing: border-box;
 			border-radius: 3px 0 3px 3px;
-			border: 8px solid #333;
+			border: 8px solid #1778af;
 		}
 	}
 }
diff --git a/src/js/controllers/ctrl-collaboration.js b/src/js/controllers/ctrl-collaboration.js
index d5541ca6..712b1b4b 100644
--- a/src/js/controllers/ctrl-collaboration.js
+++ b/src/js/controllers/ctrl-collaboration.js
@@ -164,7 +164,7 @@ app.controller('CollaborationController', function(
 			first: user.first,
 			last: user.last,
 			gravatar: user.gravatar,
-			access: ACCESS.VISIBLE
+			access: String(ACCESS.VISIBLE)
 		})
 
 		$timeout(() => {
@@ -268,6 +268,10 @@ app.controller('CollaborationController', function(
 		VISIBLE: ACCESS.VISIBLE,
 		FULL: ACCESS.FULL
 	}
+	$scope.accessLevels = {}
+	$scope.accessLevels[ACCESS.VISIBLE] = { value: ACCESS.VISIBLE, text: 'View Scores' }
+	$scope.accessLevels[ACCESS.FULL] = { value: ACCESS.FULL, text: 'Full' }
+
 	$scope.alert = Alert
 	$scope.search = _search
 	$scope.updatePermissions = _updatePermissions
diff --git a/src/js/controllers/ctrl-collaboration.test.js b/src/js/controllers/ctrl-collaboration.test.js
new file mode 100644
index 00000000..039da5ff
--- /dev/null
+++ b/src/js/controllers/ctrl-collaboration.test.js
@@ -0,0 +1,41 @@
+describe('CollaborationController', () => {
+	let $controller
+	var mockPlease
+	let $scope
+
+	beforeEach(() => {
+		mockPlease = { $apply: jest.fn() }
+		let app = angular.module('materia')
+		app.factory('Please', () => mockPlease)
+
+		require('../materia-namespace')
+		require('../materia-constants')
+		require('../materia/materia.coms.json')
+		require('../services/srv-selectedwidget')
+		require('../services/srv-datetime')
+		require('../services/srv-widget')
+		require('../services/srv-user')
+		require('ngmodal/dist/ng-modal')
+		require('hammerjs')
+		require('./ctrl-alert')
+		require('./ctrl-collaboration')
+
+		inject(_$controller_ => {
+			$controller = _$controller_
+		})
+
+		$scope = {
+			$watch: jest.fn(),
+			$on: jest.fn()
+		}
+	})
+
+	it('defines expected scope vars - accessLevels', () => {
+		$controller('CollaborationController', { $scope })
+		expect($scope.accessLevels).toHaveProperty('1')
+		expect($scope.accessLevels).toHaveProperty('30')
+		expect($scope.accessLevels[1]).toHaveProperty('text')
+		expect($scope.accessLevels[1].text).toBe('View Scores')
+		expect($scope.accessLevels[30].value).toBe(30)
+	})
+})
diff --git a/src/js/controllers/ctrl-export-scores.js b/src/js/controllers/ctrl-export-scores.js
index 582187db..3e3f9d17 100644
--- a/src/js/controllers/ctrl-export-scores.js
+++ b/src/js/controllers/ctrl-export-scores.js
@@ -7,7 +7,7 @@ app.controller('ExportScoresController', function(Please, $scope, selectedWidget
 		$scope.selectedId = wgt.id
 
 		if ($scope.selected.scores.list.length === 0 || !$scope.selected.hasScores) {
-			$scope.exportOpts = ['Questions and Answers']
+			$scope.exportOpts = ['Questions and Answers', 'Referrer URLs']
 		} else {
 			let scores_only
 			if (wgt.guest_access) {
@@ -15,7 +15,7 @@ app.controller('ExportScoresController', function(Please, $scope, selectedWidget
 			} else {
 				scores_only = 'High Scores'
 			}
-			$scope.exportOpts = [scores_only, 'Full Event Log', 'Questions and Answers']
+			$scope.exportOpts = [scores_only, 'Full Event Log', 'Questions and Answers', 'Referrer URLs']
 			if (
 				(wgt.widget.meta_data.playdata_exporters != null
 					? wgt.widget.meta_data.playdata_exporters.length
@@ -47,8 +47,11 @@ app.controller('ExportScoresController', function(Please, $scope, selectedWidget
 				})
 			}
 
-			// First semester is checked by default
-			$scope.semesters[0].checked = true
+			// First semester is checked by default unless there are no semesters
+			if ($scope.semesters.length !== 0) {
+				$scope.semesters[0].checked = true
+			}
+
 			$scope.onSelectedSemestersChange()
 			Please.$apply()
 		})
diff --git a/src/js/materia/materia.creatorcore.js b/src/js/materia/materia.creatorcore.js
index 3d1ffc9b..c7fa1b23 100644
--- a/src/js/materia/materia.creatorcore.js
+++ b/src/js/materia/materia.creatorcore.js
@@ -6,6 +6,7 @@ Namespace('Materia').CreatorCore = (() => {
 	let _resizeInterval = null
 
 	const _onPostMessage = e => {
+		if (typeof e.data !== 'string') return
 		const msg = JSON.parse(e.data)
 		switch (msg.type) {
 			case 'initNewWidget':
diff --git a/src/js/materia/materia.creatorcore.test.js b/src/js/materia/materia.creatorcore.test.js
index a45844fd..9329554b 100644
--- a/src/js/materia/materia.creatorcore.test.js
+++ b/src/js/materia/materia.creatorcore.test.js
@@ -152,6 +152,12 @@ describe('creatorcore', () => {
 		expectOnlyCreatorMethodCalledToBe('onQuestionImportComplete')
 	})
 
+	it('reacts properly to post messages with non-string data', () => {
+		mockPostMessageFromWidget('', '', undefined)
+		console.log(window.addEventListener)
+		expect(window.addEventListener).toHaveLastReturnedWith(undefined)
+	})
+
 	it('reacts properly to unknown post messages', () => {
 		jest.spyOn(console, 'warn')
 		mockPostMessageFromWidget('undefinedMessageType', 'unknown-source', ['payload'])
diff --git a/src/js/materia/materia.enginecore.js b/src/js/materia/materia.enginecore.js
index 86782e86..3a718a3d 100644
--- a/src/js/materia/materia.enginecore.js
+++ b/src/js/materia/materia.enginecore.js
@@ -7,6 +7,7 @@ Namespace('Materia').Engine = (() => {
 	let _widgetClass = null
 
 	const _onPostMessage = e => {
+		if (typeof e.data !== 'string') return
 		const msg = JSON.parse(e.data)
 		switch (msg.type) {
 			case 'initWidget':
diff --git a/src/js/materia/materia.enginecore.test.js b/src/js/materia/materia.enginecore.test.js
index 34c7e515..48f95c27 100644
--- a/src/js/materia/materia.enginecore.test.js
+++ b/src/js/materia/materia.enginecore.test.js
@@ -101,6 +101,15 @@ describe('enginecore', () => {
 		expect(Engine.getMediaUrl('fR93X')).toBe('mediaUrl/fR93X')
 	})
 
+	it('reacts properly to post messages with non-string data', () => {
+		Engine.start({ start: jest.fn() })
+		let _onPostMessage = window.addEventListener.mock.calls[0][1]
+		_onPostMessage({
+			data: undefined
+		})
+		expect(parent.postMessage).toHaveLastReturnedWith(undefined)
+	})
+
 	it('end sends post message and defaults to show score screen', () => {
 		Engine.end()
 		let ex = JSON.stringify({
diff --git a/src/js/materia/materia.score.js b/src/js/materia/materia.score.js
index 2cfd46f6..d44f0e55 100644
--- a/src/js/materia/materia.score.js
+++ b/src/js/materia/materia.score.js
@@ -3,6 +3,7 @@ Namespace('Materia').Score = (() => {
 	const WIDGET_INTERACTION_UNSCORED = 1001 // any (scorable) widget intraction beyond a basic answered question. Includes question adjustments, overall adjustments, etc
 	const FINAL_SCORE_FROM_CLIENT = 1002 // a final score from the widget
 	const QUESTION_ANSWERED_UNSCORED = 1004 // a basic answered question (e.g., 'what color is the sky?' 'blue')
+	const SCORE_PARTICIPATION = 1006 // a non-scored widget can return a "participation score" if it chooses to
 	const SCORE_FEEDBACK = 1008 // attaches a feedback message to a question (or game if qid is 0)
 	const DATA = 2000
 
@@ -35,6 +36,12 @@ Namespace('Materia').Score = (() => {
 	const submitQuestionForScoring = (questionID, userAnswer, value) =>
 		Materia.Engine.addLog(QUESTION_ANSWERED_UNSCORED, questionID, userAnswer, value)
 
+	// A participation score submission
+	// This logs a participation grade for non-scorable widgets.
+	// @param questionID the ID of the question being answered
+	const submitScoreForParticipation = (value = 100) =>
+		Materia.Engine.addLog(SCORE_PARTICIPATION, -1, 'Participation', value)
+
 	// Adds a message/feedback to the overall score screen
 	const addGlobalScoreFeedback = msg => Materia.Engine.addLog(SCORE_FEEDBACK, '0', msg)
 
@@ -44,6 +51,7 @@ Namespace('Materia').Score = (() => {
 		submitInteractionForScoring,
 		submitFinalScoreFromClient,
 		submitQuestionForScoring,
+		submitScoreForParticipation,
 		addGlobalScoreFeedback,
 		addScoreData
 	}
diff --git a/src/js/materia/materia.score.test.js b/src/js/materia/materia.score.test.js
index b8738a84..a83cd416 100644
--- a/src/js/materia/materia.score.test.js
+++ b/src/js/materia/materia.score.test.js
@@ -13,6 +13,7 @@ describe('Materia.Score', () => {
 		expect(Score.submitInteractionForScoring).toBeDefined()
 		expect(Score.submitFinalScoreFromClient).toBeDefined()
 		expect(Score.submitQuestionForScoring).toBeDefined()
+		expect(Score.submitScoreForParticipation).toBeDefined()
 		expect(Score.addGlobalScoreFeedback).toBeDefined()
 		expect(Score.addScoreData).toBeDefined()
 	})
@@ -27,6 +28,11 @@ describe('Materia.Score', () => {
 		expect(mockAddLog).toHaveBeenLastCalledWith(1008, '0', 'my message')
 	})
 
+	it('submitScoreForParticipation calls addLog', () => {
+		Score.submitScoreForParticipation()
+		expect(mockAddLog).toHaveBeenLastCalledWith(1006, -1, 'Participation', 100)
+	})
+
 	it('submitQuestionForScoring calls addLog', () => {
 		Score.submitQuestionForScoring(6, 'answer', 'optional value')
 		expect(mockAddLog).toHaveBeenLastCalledWith(1004, 6, 'answer', 'optional value')
diff --git a/yarn.lock b/yarn.lock
index daebf8c7..a8abfe25 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4283,9 +4283,9 @@ lodash.uniq@^4.5.0:
   integrity sha1-0CJTc662Uq3BvILklFM5qEJ1R3M=
 
 lodash@^4.0.0, lodash@^4.17.11, lodash@~4.17.10:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
-  integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
+  version "4.17.14"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.14.tgz#9ce487ae66c96254fe20b599f21b6816028078ba"
+  integrity sha512-mmKYbW3GLuJeX+iGP+Y7Gp1AiGHGbXHCOh/jZmrawMmsE7MS4znI3RL2FsjbqOyMayHInjOeykW7PEajUk1/xw==
 
 log-symbols@^1.0.2:
   version "1.0.2"