Hello, Some more testing of Xfree 4.3 led me to find that crack-attack doesn't work any more. It doesn't even compile anymore. The trouble is with function glActiveTextureARB, found not declared. Apparently this is not the first time this is the problem. Google lead me to http://seneca.me.umn.edu/pipermail/flightgear-devel/2003-March/016073.html which talks about the same problem...