http://bugs.winehq.org/show_bug.cgi?id=3945
------- Additional Comments From ivg2@cornell.edu 2006-13-07 06:21 ------- This seems like something sounds related - you can try disabling sound, or changing the options to see if it goes away. If it doesn't, this trace isn't sufficient to find out what the problem is - try +d3d, +d3d_shader,+d3d_draw to see what's going on in more detail.
Regarding d3d - the opcodes pow, nrm, rep, endrep, are all implemented in the current GLSL backend. If you have a GLSL-capable card, you might want to try enabling the GLSL key, and see if it works better for you. To do that, make a string key under: HKEY_CURRENT_USER//Software/Wine/Direct3D called UseGLSL. Set it to "enabled". You can run a +d3d_caps trace to see if it worked - it will say which backend is selected.
Also, use the latest git, the flow control instructions were added only yesterday.