1. please don't put 'unsolved' up unless people have tried to help and it's still unsolved. 2. you should make a mod page for this mod and troubleshoot there. 3. hope you fix it. looks like it could be a really good mod!
1. dont be stupid the problem is unsolved so i set it as unsolved 2. http://beamng.com/threads/d-series-convertible-need-help.34613/ 3. k then
alright, try un installing the mod. if the problem will stop and you can keep the mod, great. but the mod might be causing a problem. see how it is without the mod.
Looking at your material file , it's seem your "pickup_cabrio_c.dds and the _d one are empty, try to use the original pickup materials it should work