FIX FOUND CHECK BEFORE SUBMITTING SAME ERROR: Fix is easy If you have the "Gabester pack" installed none of the G2 skin's will work, In order to make them work - 1.Uninstall the Gabester pack. 2.Install every vehicle included in the pack seperetly by going to their own Repository site's. The guid is now added to G2S, G2X and G2R. If the skin's do not work for the G2 still fix for that can be found in this disscusion threaWell uh but there is a small other problem none of them work g2,g2s,g2r,g2x.
You open the truck file of the desired mod and find if it has a guid line or not. In the base G2's case it uses this: guid f1952297-1ee8-464e-bf38-6ad4d29c9510
The other variants of the G2 have a separate GUID but the .skinzip simply never included the base G2 in that. You can change the guid to match any of the other G2's and it'll work fine.
This might help.