--- a/Helpviewer/HelpBrowserWV.py	Mon Jul 16 18:25:00 2012 +0200
+++ b/Helpviewer/HelpBrowserWV.py	Tue Jul 17 18:52:23 2012 +0200
@@ -240,7 +240,8 @@
         @return flag indicating the support of extension (boolean)
         """
         try:
-            if extension == QWebPage.ErrorPageExtension:
+            if extension in [QWebPage.ErrorPageExtension,
+                              QWebPage.ChooseMultipleFilesExtension]:
                 return True
         except AttributeError:
             pass