www.makemkv.com

I am also running Bitdefender; MakeMKV 1.9.5 works normally when "on access scanning" is disabled.

Thanks for the tip!

Hi Mike

Many thanks for your answer!

First of all in 32-bit mode v1.9.5 works! :)
The problem in 64-bit mode could be caused by the Bitdefender AVR.

I will update my system ...

I'm in the same boat, running Windows 7 Pro 64-bit. Uninstall 1.9.4 for a clean installation of 1.9.5, launches and immediately pops up a "makemkvcon64.exe has stopped working" error message:

Problem signature:
Problem Event Name: APPCRASH
Application Name: makemkvcon64.exe
Application Version ...