Hi MusicDemon
The error information is not detailed enough, we may need to see the return code to identify what might happen and how we could fix it.
Generally, the error means that Windows Installer encountered an error while trying to install assemblies to the Global Assembly Cache (GAC).
Please also check to run the setup to pass the UAC and AV blocks, if any.
And here is a troubleshooting guide of error 1935 might be helpful to you: http://blogs.msdn.com/astebner/archive/2004/11/10/255346.aspx
If you still have problems, please use the collect tool mentioned here: http://blogs.msdn.com/heaths/archive/2008/05/09/visual-studio-and-net-log-collection-utility.aspx to collect essential setup log files for more information.
You can later upload the vslogs.cab via http://skydrive.live.com and paste the link back here.
Thanks.
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