After installing version 1.66 I was unable to run the app. Got this error:

C:\Program Files\F-Engrave-1.66_win\f-engrave.exe
The application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.

I also noticed there is no version number on the .exe file like the previous versions???

I have been successfully running version 1.64 on this machine