Hi there. I wrote a nice collision testing program but when I''m trying to run it on another machine, the window is left blank (black). But it seems everything is done correctly as the log file says. Just nothing is drawn. Even with another machine with the same 3d card I have, only a black window.. Many thanks if you can help or help me advance in the problem .

there are, let me see. twiddle.. count.. scrumage.. shuffle.
yes, ok the answer is there can be a million and one posible causes

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