Index: lams_learning/src/java/org/lamsfoundation/lams/learning/export/web/action/CSSBundler.java
===================================================================
diff -u -r7998a31f6d7d4f1eef3e866bafef22caa012eb7a -rb6b5573e2fcdc96c208fcaba678857503a8e1ca1
--- lams_learning/src/java/org/lamsfoundation/lams/learning/export/web/action/CSSBundler.java	(.../CSSBundler.java)	(revision 7998a31f6d7d4f1eef3e866bafef22caa012eb7a)
+++ lams_learning/src/java/org/lamsfoundation/lams/learning/export/web/action/CSSBundler.java	(.../CSSBundler.java)	(revision b6b5573e2fcdc96c208fcaba678857503a8e1ca1)
@@ -208,7 +208,10 @@
 		
 					File[] files = dir.listFiles();
 					for ( File imageFile: files ) {
+					    //skip the directories out
+					    if (imageFile.isFile()) {
 						filesToCopy.put(outputImageDirectory+File.separatorChar+imageFile.getName(),imageFile);
+					    }
 					}
 				}
 			}