[xwiki-users] Can't use comments, attachments, history or information

I'm running an XWiki Farm with 3 XWikis. I upgraded to the latest version of the XWiki, but now I can't use the Comments, Attachements, History or Information Tabs (buttons). I click on them and it sends me to the url domain/xwiki/bin/view/Main/#Attachments, but it doesn't show anything. These were working before the upgrade. Any ideas? Sam