Index: tool/src/java/org/sakaiproject/lessonbuildertool/tool/beans/SimplePageBean.java
===================================================================
--- tool/src/java/org/sakaiproject/lessonbuildertool/tool/beans/SimplePageBean.java	(revision 3286)
+++ tool/src/java/org/sakaiproject/lessonbuildertool/tool/beans/SimplePageBean.java	(revision 3287)
@@ -5532,6 +5532,22 @@
 			    cc = contentHostingService.getCollection(contentCollectionId);
 			}
 
+			// UMU fix
+			// Make MAC OS X zips work
+			if (children.size() == 2 && children.get(0).endsWith("/") && children.get(1).endsWith("/")) {
+				String dataChild = null;
+				if (children.get(0).endsWith("__MACOSX/")) {
+					dataChild = children.get(1);
+				} else if (children.get(1).endsWith("__MACOSX/")) {
+					dataChild = children.get(0);
+				}
+				
+				if (dataChild != null) {
+				    contentCollectionId = dataChild;
+				    cc = contentHostingService.getCollection(contentCollectionId);
+				}
+			}
+						
 			// Now lets work out what type it is and return the appropriate
 			// index url