Edit usergroup but instead it creates a duplicate

[inspiration100]

Confused what's going on here. I edit something in the usergroup manager area, like admin permissions... and I click save. It creates another usergroup called "Admin" with a different user ID with those corrections instead of just saving the old one.
Why is it doing this? Any help would be greatly appreciated.

Thank you!

P.S. I found that my installation of a purchased VBPlaza is doing the error but VBCredits also did it. What might be the cause of this? It's obviously something that involves those two plugins.

[Dismounted]

I found that my installation of a purchased VBPlaza is doing the error but VBCredits also did it. What might be the cause of this? It's obviously something that involves those two plugins.
You should post in their support forums. The developers of those products would be able to look into it.

[Marco van Herwaarden]

You could start by disabling your modifications and see if that solve the problem.