https://bugs.winehq.org/show_bug.cgi?id=37612
--- Comment #7 from Matteo Bruni matteo.mystral@gmail.com --- (In reply to Alex Henrie from comment #5)
Created attachment 56506 [details] Warband demo crash screenshot
I just downloaded the Mount & Blade: Warband demo free from Steam, and immediately after the intro video it crashed with the message:
Error loading postFX shaders: Make sure you have the latest DirectX Runtime Library installed :5:1: Error: Unable to open include file fx_configuration.h Return Code: -2147267259
Attaching the terminal output would probably give some more clues but from the error message I'd guess installing native d3dx9 would make you workaround that crash.
Anyway, that seems to be a different issue from the one this bug is about. Matt, can you retest with an up to date Wine version?