I seem to have GEM built with GLEW on Windows however the pix_texture object was crashing. It took a little time to trace the crash, but I finally figured out that it died on GL_APPLE_texture_range. Now, let's look at that again in slow-motion: Windows box, Apple specific extension, crash. GLEW apparently says 'YES!' to every extension under the sun, which means we need to clean up some code based on platform assumptions in order to make it work.
cgc