I just installed SSDT 2012 on top of SSIS 2012 with SSDT 2010, but when I want to run a package I get an error:
|Method not found: 'Boolean Microsoft.SqlServer.Dts.Design.VisualStudio2012Utils.IsVisualStudio2012ProInstalled()'.|
Apparently the Microsoft.SqlServer.Dts.Design dll belonging to SSDT 2012 is not installed in the GAC during installation. The version belonging to SSDT 2010 is still in the GAC. On the left side the assembly before fixing this bug and on the right side the assembly after fixing this bug. Ironically the assembly from 2012 has a lower version than 2010. Dave found a solution for it.
|Microsoft.SqlServer.Dts.Design dll before and after fixing the bug.|
1) Close SSDT 2012
Close Visual Studio (SSDT) 2012.
2) Visual Studio Command Prompt
Open the Visual Studio Command Prompt as administrator (otherwise the gacutil will return an error). You can do this by right clicking the shortcut and then choose Run as Administrator.
3) Change Directory
Enter the following command to change the direcory to the PrivateAssemblies folder of SSDT 2012:
cd C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\PrivateAssemblies
4) Run GACUTIL
Run GACUTIL with the following parameters to add the assembly from SSDT 2012 to the GAC:
Parameter /if will force the installation of this assembly regardsless of any existing versions of the assembly
5) Open SSDT 2012
Now open SSDT 2012 and try running the package again to check the fix.