On the latest release, I can't get OpenGL working. Analysis crashes out with a X BadMatch error from a X_GLXMakeCurrent command. I'm using ATI fglrx 8.16.20 for rendering and freeglut 2.2.0-82. Have tried compiling with all combinations of "GL_FLAG =" and "GLUT_FLAG =" but they all cause a crash. Tk works OK. Cameron