Up until now, some people seemed to have a problem with the OpenGL pack for WCP. A strange API bug on some Windows version (well, Vista x86 at least) made the OpenGL setup erroneously patch out the Huge-Plasma-Gun version of the Midway, so the game would crash the first time you'd launch from it. Clever gamers found a workaround (restoring DATA.TRE from the CD) but this disabled the enhanced effects edited textures. This new version fixes the patch process, and repairs the previously damaged DATA.TRE if needed. You can download the new version here. Thanks to Whistler for helping me find the source of the problem through is affected PC (I couldn't reproduce on my own machine).