photon torpedoe launcher reloads and gmod crashes

Ok, heres the deal. ive got all the sbep addons in my addons folder, downloaded via svn, everything runs fine, the torpedoe launcher spawns ok, i spawn a photon torpedoe plop it in the launcher, fire it, it detonates, the photon torpedoe starts to reload, then gmod crashes. please, help. Thanks.

p3 2.8 ghz
1 gig ram
1.0 fsb
128 mb nvidia 6200 agp
xp pro