Hello Michael, I managed to install Cygwin, its development packages and the opengl package on a computer running Vista Home Premium 64-bit edition with SP1 yesterday. Everything runs fine: the GLUI examples, the helloGLUT test program, and your own "main" test program. Possible causes for your problems: 1- BLODA. See http://cygwin.com/faq/faq.using.html#faq.using.bloda 2- Conflict between the opengl package and the libglut-devel package. If you have both, try to uninstall the libglut-devel package with the setup program. 3- You have a conflicting copy of one of the dlls installed somewhere. To help us help you further, you need to: 1- Go to the directory where your "main.exe" is. 2- Run: cygcheck ./main.exe 3- Send the output here. Also _attach_ the output of: cygcheck -s Regards, - André Bleau, Cygwin's volunteer OpenGL package maintainer. Please direct any question or comment about the OpenGL package to cygwin at cygwin dot com
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