SigmaStudio 4.6 crash on launch, unhandled exception in .NET framework

Hello,

I just installed SigmaStudio 4.6 on Windows 10 Enterprise 64-bit and I get an exception on launch. I previously tried with 4.5 and 4.4 on the same OS and laptop, same result.

The text is "an unhandled Microsoft .NET Framework exception occurred in SStudio.exe [23572]". The number in square brackets is never the same.

Any suggestions where to look next or what to try?

Thanks

Louis Bertrand
Oshawa Canada