Can't rotate props & annoying console spam.

As of a few days ago, I’m no longer able to rotate props on the Z axis with the physgun.

Spawned prop:
http://img146.imageshack.us/img146/2387/gmflatgrass0000bu.th.jpg

I can rotate it forward/back:
http://img641.imageshack.us/img641/4259/gmflatgrass0001hx.th.jpg

But not on the Z axis (left/right):
http://img101.imageshack.us/img101/5862/gmflatgrass0002a.th.jpg

I’ve tried reinstalling Gmod and removing all addons, and even redownloading the GCF from Steam, but I still have the problem. Any ideas?

I also get this annoying console spam over and over about:


Material models/spawn_effect2 does not support vertex format used by the mesh (maybe missing fields or mismatched vertex compression?), mesh will not be rendered. Grab a programmer!

Which I assume is because the VMT was made incorrectly, but can’t exactly fix it because it’s in the GCF.

[editline]1st November 2010[/editline]

Wow, I found the problem. Apparently enabling the joystick in options causes the physgun to fail.