zsieg, I seem to be having the same problem as you, and discussing it in this thread. Do check it out now and again, maybe someone will offer a working solution in there.

Well, no good news. Uninstalled TNM then Deus Ex, restarted computer, installed Deus Ex. Turns out the Game of the Year edition comes already pre-patched to v112fm, so I didn't apply any patches. Started a new game, quit the program, installed TNM, same error message as before. I see that someone el...

Jee... I don't even remember if I actually applied a separate patch after installing it, or whether "1.112fm" is the way the GOTY edition comes by default. Anyway, I'll try tomorrow (past midnight here), will post results.

Well, I cannot start the Nameless Mod, and I'm hoping someone can help me. So, I have Deus Ex Game of the Year Edition, version number 1.112fm. Never had any mod installed before, so certainly no leftover bits from those. Using Direct3D mode, as Glide runs terribly choppy and only in a window. EDIT:...