Ah, right - Vic, I think you're seeing a different error to the one in the original post of this thread, which is where SQL Source Control crashes instantly upon loading SSMS. Your error is SOC-3914, which is a considerably rarer error, but we should actually be able to make some progress with your one, since we get a stack trace when it throws the error.
It looks like that error is because we're trying to load the wrong version of one of the SQL Source Control components - I'd guess this is from a failed install, but if you tried rolling back to a previous version that ought to have fixed it. Can I get you to completely uninstall SQL Source Control and try installing the latest version again, making sure to right-click the installer and run as Administrator? The installer for the newest version is here:
ftp://support.red-gate.com/patches/SQLS ... 1.3.26.exe
If that doesn't fix it we'll need to start digging around to figure out what went wrong in that install. Your case is particularly interesting, because it looks like you're trying to load a newer
version of the component than the version of SQL Source Control you've got installed, which shouldn't ever happen.
I'm logging you a support ticket now so we don't clutter up this thread - you should get a confirmation email very soon. If we could continue troubleshooting this by email that'd be great, just so we don't get confused with two separate issues in this thread.