Not the folder, the lines inside the cam belt CFG. They should look something like this:
#render 0x???????? ; ???
#lod 0 0 // lo-res
render 0x000000DD ; V6_camshaft_drive_belt
lod 1 1 // hi-res
render 0x00000017 ; V6_camshaft_drive_belt
lod 2 2 // extr-hi-res
Put #'s in front of the extra lines that you don't need, like this:
#render 0x???????? ; ???
#lod 0 0 // lo-res
#render 0x000000DD ; V6_camshaft_drive_belt
#lod 1 1 // hi-res
render 0x00000017 ; V6_camshaft_drive_belt
#lod 2 2 // extr-hi-res
(And, actually, it was like the second one in the version of the Devil's V6 I released last, I think. Weird.)