Hi Mike, Probably the first thing you should do is make sure that the drivers for your graphics card are up to date. If Chimera continues to fail with up-to-date drivers, then run Chimera in "debug" mode and let us know what the output is. You might want to send that to chimera-bugs@cgl.ucsf.edu rather than chimera-users. That will open a ticket in our bug database for your problem and will avoid having everyone on this list receiving the details of your problem -- which probably wouldn't interest them very much. This previous mail on chimera-users details how to run Chimera in debug mode: http://plato.cgl.ucsf.edu/pipermail/chimera-users/2008-September/003120.html --Eric Eric Pettersen UCSF Computer Graphics Lab http://www.cgl.ucsf.edu On Nov 29, 2010, at 2:55 PM, Hunmin JUNG wrote:

Hi,

Whenever I open the chimera after the installation, it gives me an error 'pythonw.exe has stopped working'. It didn't matter the version of the chimera. Please what I need to do to resolve the problem.