Ensure :per_page has a default value and that it will either evaluate…

… to true or false not, say, 20.

Gemfile.lock

@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     refinerycms (0.9.9.6)
-      bundler (~> 1.0.10)
+      bundler (~> 1.0)
       refinerycms-authentication (~> 0.9.9.5)
       refinerycms-base (~> 0.9.9.5)
       refinerycms-core (~> 0.9.9.5)

core/lib/refinery/crud.rb

@@ -26,7 +26,8 @@ def self.default_options(model_name)
         :include => [],
         :paging => true,
         :search_conditions => '',
-        :redirect_to_url => "admin_#{plural_name}_url"
+        :redirect_to_url => "admin_#{plural_name}_url",
+        :per_page => false
       }
     end
 
@@ -162,7 +163,7 @@ def paginate_all_#{plural_name}
             paging_options = {:page => params[:page]}
 
             # Use per_page from crudify options.
-            if #{options[:per_page]}
+            if #{options[:per_page].present?.inspect}
               paging_options.update({:per_page => #{options[:per_page].inspect}})
             # Seems will_paginate doesn't always use the implicit method.
             elsif #{class_name}.methods.map(&:to_sym).include?(:per_page)