I've just got our website up and running on CMS 5 R2 SP2 but when in the CMS area I'm getting a parse error with:
The type 'EPiServer.WorkflowFoundation.UI.WorkflowEditPanelControl' is ambiguous: it could come from assembly 'C:\Windows\assembly\GAC_MSIL\EPiServer.UI\5.2.375.236__8fe83dea738b45b7\EPiServer.UI.dll' or from assembly 'C:\Projects\site\wwwroot\bin\EPiServer.WorkflowFoundation.UI.DLL'. Please specify the assembly explicitly in the type name.
I'm not too sure what I've done to make this happen.
Yes, had the same problem.
might be useful.