Hmm - This is a more tricky one to fix - Lionel, got any ideas?
Not really, except that its not defined either on my box but I have 'GL_MIRRORED_REPEAT_IBM' which seems to be more common.
I think instead of testing on OpenGL 1.3 for extensions, one should rather test on all individual defines which are used in glext.h (for example, in this case 'GL_ARB_texture_mirrored_repeat').
Lionel