That's very awkward, maybe it's also related to the fact that I statically linked libGLEW-1.6 into the graphics module? However, I'm not sure how that would cause unsupported OpenGL directives while SFML itself (which requires libGLEW-1.6, IIRC) does not.
In other news, Hiura has recently sent me a build of JSFML for Mac OS X so I will be able to pack up a full package today.