When you use SQL Server Management Studio or Windows Explorer to open a recent project in Microsoft SQL Server 2008 or in SQL Server 2008 R2, you receive the following error message:
Class not registered (Exception from HRESULT: 0X80040154(REGDB_E_CLASSNOTREG))
The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)