Aravan

Hello, I'm not an experienced modder, and this is also my first post here, but I just used the BWP to give another run at Baldur's Gate. I'm at High Hedge a few hours in, and when I tried to enter Thalantyr's house to get some scrolls, the game CTDs with an error message (a Windows error message; the error message in the ToBex loader is roughly the same, just more computer jargon) stating:

An Assertion failed in Infinity.cpp at line number 1889
Programmer says: Tile set AR7102 not found

Obviously, the tileset appears to be missing for whatever reason, but I do not know how to resolve this (short of avoiding High Hedge). I don't know if it is a known problem, or something similar, for if one tileset could be missing, why not another, more crucial one? I was unable to find anything in the forums, though admittedly I didn't peruse every topic out of the thousands here.
I hope somebody could shed some light on this issue of mine.