diff --git a/IndustrialPark/ArchiveEditor/ArchiveEditor.Designer.cs b/IndustrialPark/ArchiveEditor/ArchiveEditor.Designer.cs
index 94062e26..4c683324 100644
--- a/IndustrialPark/ArchiveEditor/ArchiveEditor.Designer.cs
+++ b/IndustrialPark/ArchiveEditor/ArchiveEditor.Designer.cs
@@ -247,7 +247,7 @@ private void InitializeComponent()
             this.listBoxAssets.FormattingEnabled = true;
             this.listBoxAssets.Location = new System.Drawing.Point(6, 40);
             this.listBoxAssets.Name = "listBoxAssets";
-            this.listBoxAssets.SelectionMode = System.Windows.Forms.SelectionMode.MultiSimple;
+            this.listBoxAssets.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended;
             this.listBoxAssets.Size = new System.Drawing.Size(507, 290);
             this.listBoxAssets.TabIndex = 3;
             this.listBoxAssets.SelectedIndexChanged += new System.EventHandler(this.listBoxAssets_SelectedIndexChanged);
diff --git a/IndustrialPark/ArchiveEditor/ArchiveEditor.cs b/IndustrialPark/ArchiveEditor/ArchiveEditor.cs
index e78b3733..9a19c149 100644
--- a/IndustrialPark/ArchiveEditor/ArchiveEditor.cs
+++ b/IndustrialPark/ArchiveEditor/ArchiveEditor.cs
@@ -499,30 +499,27 @@ private void saveAsToolStripMenuItem_Click(object sender, EventArgs e)
         
         private void listBoxAssets_SelectedIndexChanged(object sender, EventArgs e)
         {
-            if (listBoxAssets.SelectedItems != null)
+            archive.ClearSelectedAssets();
+            foreach (string s in listBoxAssets.SelectedItems)
+                archive.SelectAsset(GetAssetIDFromName(s), true);
+
+            if (listBoxAssets.SelectedItems.Count == 1)
             {
-                archive.ClearSelectedAssets();
-                foreach (string s in listBoxAssets.SelectedItems)
-                    archive.SelectAsset(GetAssetIDFromName(s), true);
+                buttonEditAsset.Enabled = true;
 
-                if (listBoxAssets.SelectedItems.Count == 1)
+                if (archive.GetFromAssetID(CurrentlySelectedAssetIDs()[0]) is IClickableAsset a)
                 {
-                    buttonEditAsset.Enabled = true;
-
-                    if (archive.GetFromAssetID(CurrentlySelectedAssetIDs()[0]) is IClickableAsset a)
-                    {
-                        if (a is AssetDYNA dyna)
-                            buttonView.Visible = dyna.IsRenderableClickable;
-                        else
-                            buttonView.Visible = true;
-                    }
+                    if (a is AssetDYNA dyna)
+                        buttonView.Visible = dyna.IsRenderableClickable;
                     else
-                        buttonView.Visible = false;
+                        buttonView.Visible = true;
                 }
                 else
-                {
-                    buttonEditAsset.Enabled = false;
-                }
+                    buttonView.Visible = false;
+            }
+            else
+            {
+                buttonEditAsset.Enabled = false;
             }
         }
 
@@ -538,21 +535,43 @@ public void MouseMoveY(SharpCamera camera, int deltaY)
 
         public void SetSelectedIndexes(List<uint> assetIDs, bool add = false)
         {
-            if (!add)
+            if (assetIDs.Contains(0) && !add)
+            {
                 listBoxAssets.SelectedIndices.Clear();
+                archive.UpdateGizmoPosition();
+                return;
+            }
+
+            if (add)
+                assetIDs.AddRange(CurrentlySelectedAssetIDs());
+
+            listBoxAssets.SelectedIndices.Clear();
+
+            AssetType assetType = AssetType.Null;
 
             foreach (uint u in assetIDs)
-            {
-                try
+                if (archive.ContainsAsset(u))
                 {
+                    assetType = archive.GetFromAssetID(u).AHDR.assetType;
                     comboBoxLayers.SelectedIndex = archive.GetLayerFromAssetID(u);
-                    comboBoxAssetTypes.SelectedItem = archive.GetFromAssetID(u).AHDR.assetType;
+                    break;
                 }
-                catch
+
+            foreach (uint u in assetIDs)
+                if (archive.ContainsAsset(u) && archive.GetFromAssetID(u).AHDR.assetType != assetType)
                 {
-                    PopulateAssetList();
+                    assetType = AssetType.Null;
+                    break;
                 }
 
+            comboBoxAssetTypes.SelectedItem = assetType;
+            PopulateAssetList(assetType);
+
+            foreach (uint u in assetIDs)
+            {
+                if (!archive.ContainsAsset(u))
+                    continue;
+
                 for (int i = 0; i < listBoxAssets.Items.Count; i++)
                     if (GetAssetIDFromName(listBoxAssets.Items[i] as string) == u)
                         listBoxAssets.SelectedIndices.Add(i);
diff --git a/IndustrialPark/ArchiveEditor/ArchiveEditorFunctions.cs b/IndustrialPark/ArchiveEditor/ArchiveEditorFunctions.cs
index f1dfb50c..da07769b 100644
--- a/IndustrialPark/ArchiveEditor/ArchiveEditorFunctions.cs
+++ b/IndustrialPark/ArchiveEditor/ArchiveEditorFunctions.cs
@@ -625,20 +625,27 @@ public void OpenInternalEditor(List<uint> list)
 
         private void OpenInternalEditor(Asset asset)
         {
-            for (int i = 0; i < internalEditors.Count; i++)
-                if (internalEditors[i].GetAssetID() == asset.AHDR.assetID)
-                    internalEditors[i].Close();
+            CloseInternalEditor(asset.AHDR.assetID);
 
-            if (asset is AssetCAM CAM)
-                internalEditors.Add(new InternalCamEditor(CAM, this));
-            else if (asset is AssetDYNA DYNA)
-                internalEditors.Add(new InternalDynaEditor(DYNA, this));
-            else if (asset is AssetTEXT TEXT)
-                internalEditors.Add(new InternalTextEditor(TEXT, this));
-            else if (asset.AHDR.assetType == AssetType.SND | asset.AHDR.assetType == AssetType.SNDS)
-                internalEditors.Add(new InternalSoundEditor(asset, this));
-            else
-                internalEditors.Add(new InternalAssetEditor(asset, this));
+            switch (asset.AHDR.assetType)
+            {
+                case AssetType.CAM:
+                    internalEditors.Add(new InternalCamEditor((AssetCAM)asset, this));
+                    break;
+                case AssetType.DYNA:
+                    internalEditors.Add(new InternalDynaEditor((AssetDYNA)asset, this));
+                    break;
+                case AssetType.TEXT:
+                    internalEditors.Add(new InternalTextEditor((AssetTEXT)asset, this));
+                    break;
+                case AssetType.SND:
+                case AssetType.SNDS:
+                    internalEditors.Add(new InternalSoundEditor(asset, this));
+                    break;
+                default:
+                    internalEditors.Add(new InternalAssetEditor(asset, this));
+                    break;
+            }
 
             internalEditors.Last().Show();
         }
diff --git a/IndustrialPark/MainForm/MainForm.cs b/IndustrialPark/MainForm/MainForm.cs
index 822c645a..435fe2e5 100644
--- a/IndustrialPark/MainForm/MainForm.cs
+++ b/IndustrialPark/MainForm/MainForm.cs
@@ -598,8 +598,8 @@ public void ScreenClicked(Rectangle viewRectangle, int X, int Y, bool isMouseDow
                     }
                     else
                         assetID = ArchiveEditorFunctions.GetClickedAssetID(ray);
-                    if (assetID != 0)
-                        Program.MainForm.SetSelectedIndex(assetID);
+
+                    Program.MainForm.SetSelectedIndex(assetID);
                 }
             }
         }