http://bugs.winehq.org/show_bug.cgi?id=8107
--- Comment #72 from Francisco Pina Martins f.pinamartins@gmail.com 2010-11-23 12:21:22 CST --- Created an attachment (id=32093) --> (http://bugs.winehq.org/attachment.cgi?id=32093) "Shaders" dir
Also, there is a directory named "Shaders" in the game directory. I have compressed that directory and attached it, so you can look at it's structure. Maybe the error message refers to no being able to find one of these files?