Starting the upgrade of the forum at Librarium Online soon. I hope they fixed the bug with invalig urls to the social group from the sidebar. I read in the announcement they should fix more than 200 of bug in this release.

Ive taken the liberty to post the list of what they will fix in this release

Highlights of what’s fixed in 4.0.1:
• [Tab Ordering] Added Tab Index Ordering
• [Search] Added Search Results by Relevancy
• [IE6] Fixed: background images disappear in IE6
• [IE6] Fixed: Additional IE6 bug fixes.
• [IE6] Fixed IE6 issues in CMS home.
• [IE6] Post dates missing in IE6
• [IE6] Forum leaders page
• [IE6] Fixed CP CMS Section edit popup displays under other page elements in IE6.
• [IE8] Fixed post reputation in IE8
• [StyleVar] Fixed StyleVars
• [StyleVar] Added Stylevars for UserCP/Settings
• [Video] Fixed IE8 Bugs
• [Sidebar Blocks] Fixed Sidebar handling of long title names
• [Blogs] Lightbox doesn’t work in Blogs including inline images
• [CMS] Fixed CMS Static HTML Widget
• [CMS] Fixed CMS PHP Direct Widget
• [CMS] Fixed CMS Category Bug
• [CMS] Widget Manager – When creating a new widget, widget type pull down should display in alphabetical order
• [CMS] Section Reset Ordering Bug
• [CMS] Please put CMS in /index.php and FORUMS in /forums/index.php
• [CMS] CMS Query Bug – Phase 1
• [Groups] Removed hardcoded phrases in Groups
• [Announcements] Fixed Announcement display problem
• [Smilies] Fixed Smilie Path – Forced to use relative path
• [CSS] user defined Additional CSS to pages
• [CSS] Store CSS as files does not work
• [Sitemap] Sitemap not being Recognized by Google (only Forums)
• [RTL] Problem in What’s New Page when change Language R2L
• [RTL] editor icons problem
• [RTL] The new forum home sidebar does not move to the left when viewing the site in a RTL language.
• [RTL] Groups issues
• [RTL] Fixed RTL and IE7
• [Style Manager] Unchecking style in Style Manager causes style issues
• …and about 200 more bugs

I cant seem to find anything related to my bug in there :(