They are Unofficial versions from the same developer responsible for MPC 6.4.9.1, and started appearing in January 2018. These builds contain small fixes/improvements, updated internal codecs (LAV...

The solution that works for me:

1. Right click on your C:\ drive and select "Properties".
2. Go to the Security tab. Click "Edit" and "Add".
3. In the text box asking for object names, type ALL...

THANKS!!!!!....
It works for me, and Calculator is running again!!!... \O/

I HATE all this "permissions" things from Windows... :mad:
It's always getting in the way...
Good days of Windows...