I didn't make it!
I get this error message when I'm trying to launch JK2, but my system supports my graphics card (Windows XP with NVIDIA GeForce 2 MX, I know, "What? compatibility issues?"), and I had it installed on this system before, I had it reformatted due to a major worm
Make sure your drivers are up-to-date.
And... upgrade your graphics card. Seriously. The GeForce 2 is so primitive even Fred Flintstone wouldn't use one. o_0
I don't know how, and I don't know why, but this is totally Sheep's fault.