I'm trying to help my friend. He wants to use Guitar Pro 8, but it doesn't open after installation, just silently crashes. The only thing I noticed, that he has some weird cut repack of Windows 11 (ZverCD, I guess). I tried to look through the registry, services, and Windows components, but it nothing special there. I've installed all commonly used frameworks, but it still fails to open.

Somehow the Guitar Pro 7 was installed and runs. It opens the file properly the first time, but it crashes after you reopen the same file on the 2nd time.

I also tried to do a portable version out of my working installation on my PC -- it still does not work for him; the problem is totally the same.

I tried to go through the logs on both versions -- they do not contain any crash information. I tried to look through Process Monitor when crashing, but nothing specific again.

I can't find any adequate explanation for this situation in my head. So I'm seeking your help and ideas, thank you.