There are sometimes difficulties changing a window set up for using pygame into one used for PyOpenGL, or vice-versa. The error you're getting implies this sort of error--are you accidentally using the wrong window? PyOpenGL might just not like being in a subprocess, or being quit in a subprocess.
>>> import pygame >>> from pygame.locals import * >>> from OpenGL.GL import * >>> pygame.init() (6, 0) >>> pygame.display.set_mode((100,100),OPENGL|DOUBLEBUF) <Surface(100x100x32 SW)> >>> pygame.display.quit() >>> pygame.display.set_mode((100,100),OPENGL|DOUBLEBUF) <Surface(100x100x32 SW)> >>> pygame.display.quit() As this shows, it is perfectly possible to build an OpenGL window several times, but subprocesses might put a different spin on it. Ian
