Basically, the problem is that there's a memory leak in the engine that happens every time Reinforcements happen, and the sheer numbers in the mod trigger an out-of-memory crash for people trying to play the mod on WinXP with 2GB of RAM. You won't see it in the other mods because the leak isn't giant, just a few MB per Reinforcement wave. When you have 1000 troops vs. 2000 troops, however... things get pretty messed up.
Since that bug has never been fixed, to the best of my knowledge, and most likely never will get fixed, but I wanted to keep the massive battles that are so much fun in the mod, this was the compromise.
As for the loot... that really shouldn't be happening, regardless, if your Looting score is more than zero (including your Companions bonuses). Same with the cash gain; that doesn't make much sense, at least not with the last released version of the mod.
I don't have the time to fix these kinds of bugs, if they're bugs in the current code at all, however the source is available to everybody in the /source directory and if somebody were to find and patch such a bug and offer the changed source + a build for non-modders to install, I'd certainly be happy to endorse it as an unofficial patch, if it existed and I knew about it. I've only been able to dig up the time to check up around here a few times in the last year, though, so it's not like it would be a fast process