When you Edit a build definition and open the Process tab, it starts to load the custom assemblies (if you have any), then it stops before displaying the process parameters, with the messagebox : Team Foundation Error: Method not found: ‘System.String .ProcessParameterError.get_ParameterValue()’ġ. Accessing the Process node on Edit Build Definition fails Go to your program files directory for VS 2012 and down to the extension folder like: C:Program Files (x86)Microsoft Visual Studio 11.0Common7IDECommonExtensionsMicrosoftTeamFoundationTeam Explorerģ. System.TypeLoadException: Could not load type ‘’ġ. When you try to access the Team Explorer Build node, you get a System.TypeLoadException error like this: This forum post is about the same issues. The fixes below however, cures these issues, but you don’t have to do these now, just uninstall TFS 11 beta! Note that a repair will not fix the issue, and a Windows restore and subsequent reinstall may not fix it either. I have listed the symptoms known now below, and will update if there are more issues. What is good is that if you forget to uninstall TFS Beta 11 first, and get these issues, all that is required is to uninstall TFS 11 Beta, and VS 2012 RC will start working correctly! These issues are caused by also having TFS 11 Beta server installed on the same machine. The Visual Studio RC has shown some install issues in some cases, particularly for those who upgrades from VS 11 Beta. Uninstall TFS 11 Beta before or even after install of VS 2012 RC.

Updated: June 7th 2012: Cause for the issues found! Unsupported scenario having TFS 11 Beta side-by-side.

Free download visual studio 2012