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True Key Crashing [Windows 10]

Hi All,

True Key has been rock solid for a good few years on all my machines. However, today, True Key stopped working altogether. 

 

1) It doesn't open

2) When it eventually loads, I'm presented with a white screen and the app fails to fully render.

3) When I attempt to close True Key, I'm presented with a "Not responding" message and I need to enter Task Manager to kill the process 

 

I've tried:

 

1. Deleting the "mcylsq.dat" file whilst stopping and re-enabling all True Key services.

2) Full uninstall and reinstall using the latest version from the True Key website (tried doing this twice). I even tried reinstalling it without uninstalling the previous install.

3) Uninstalling Chrome True Key extension and repeating Point #2 & resetting Chrome to default 

 

Please can someone help? I'm reliant on True Key working to help me get on with my work etc. It's unacceptable that the product has somehow stopped working. 

 

Thank you for your help in advance .

 

Ps. Screen shots attached.

 

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