and CYCLE_ACCEL_RIM_OVERRIDE is boolean, right? I should set it to 0 to allow older clients to connect to my server? Maybe I should use CYCLE_BOOSTFACTOR_RIM instead of CYCLE_BOOST_RIM? I don't understand the difference; was this changed in one of the branches?

SOLVED!

I had set CYCLE_WALL_NEAR 0, not understanding how that function works. I set it back to 6 and the server works fine, even though I'm not entirely sure why. Whatever. I'm just glad I can race now.

Thanks for all your help guys.