I am getting an error installing the latest version. It seems that the first installation failed with an Add-In-manager error similar the the "80070002" experienced by someone else. Then I tried to reinstall the version and got a .Net Framework Installation Utility error with the following error

EventType : clr20r3     P1 : installutil.exe     P2 : 2.0.50727.1433    
P3 : 471ebfbb     P4 : mscorlib     P5 : 2.0.0.0     P6 : 471ebc5b     P7 : 1295
P8 : 14     P9 : system.io.filenotfoundexception 

Everthing is stuck now?

Did you get StrataFrame fully uninstalled or is it still in the Add/Remove programs section?  If you have it fully removed, then try the install again, but it does sound like you have a .NET and/or an MSI issue.

The reason that the add-ins would have failed is because the installutil.exe failed to launch the installer...so it is kindof an uphill battle once there are some core issues like this.

I would try to do everything else before your uninstall and reinstall the .NET framework...this can be bad mojo sometimes...especially when things are already broken.