If you seem to have lost your VIC graphics after accepting Windows build 1903, we are looking into it. As a workaround, stop the VIC. Open Internet Explorer and clear the cache.
Go to C:\Program Files (x86)\Trihedral, right click on the VTSX.exe and run it as administrator - even if you are an administrator.
Log in and run it once. Close it. You should be able to run it normally from your short cut.