That's a fact. I've noted that the problem happens after a number of battles. Like @DRAGONFIRE_Sr said, 7 or 8 battles.
Maybe some memory leak that grows with time until the crash, if the mod were in C or C++ would be easy to say that memory problems would be the cause, but, in Python... hard to say!!!
I'll try to kill the client every 6 battles and see if it works, lol, we have to try everything in this case...