Visual Studio 2012 Update 2 CTP 3–After updating, editing work items from web gives you TF400898: An Internal Error Occurred.

Addresses a DLL mismatch issue occurring after installing Visual Studio 2012 Update 2 CTP3 without the corresponding TFS 2012 Update 2 CTP3, leading to TF400898 error when editing work items from the web. Provides a workaround involving uninstalling specific TFS Object Model MSI packages and repairing the TFS installation to resynchronize DLL versions.