Maybe someone here can help me. I'm pulling my hair out.

I'm trying to migrate numerous sites to the new machine. I've done this previously with no problem at all, but now I'm getting a strange error:

Assertion failed: opt.getCBool()

I did some searching and this appears to be a MySQL problem. but I can't find squat on how to resolve it.

Has anyone got an idea on this?

Is this a problem on the Ensim server or Plesk? I have no way of knowing.