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Error Launching TestStand after installing 2020 64 Bit

I am unsure where to go from here:

When try to launch TestStand 2019 or 2020 i get the following error:

Bill_Welch_0-1614079922388.png

 

Help says to open Version Selector and make 2019 Active.  I attempt to do that and get the following error.

Bill_Welch_1-1614080003250.png

 

I tried repairing the installation of 2019 and 2020 with no success.

I even went to the point of removing and reinstalling with no success.

 

I figured there was an issue with the DLL Registration I first tried registering them with RegSVR32.exe and an error saying it could not Load the DLL.

 

I then tried to add it to the GAC thinking maybe it was a .net DLL and got an error indicating that there was no assembly Manifest.

 

At this point I have tried everything I can think of Can anyone provide further suggestions?

 

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You may have already done this but thought will ask anyway. Did you restart your PC after installing TestStand? It does a few things on restart and I have had issues before for not doing that.

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Yes I spent the entire day yesterday working on this Restarted after every repair uninstall and reinstall. This issue consistently remains.

 

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