MakeMKV BETA when exit setup an error message occurred

Hi,
I am running Windows 7 x64 Ultimate and recently, I have updated MakeMKV BETA but when I exit the setup an error message occurred. I reinstalled it but no effect. Now I expect help from you so please provide me the proper solution. I would be really grateful to you.

MakeMKV BETA Popup
Fatal error occurred, program will now exit.
OK
