Ok after some more investigation and testing I have found that it was a Toolbox bug. When you are using decimals in config you need to have "." not "," and when creating the config though Toolbox it places "," for some reason. For anyone out there who has a similar problem always double check decimals in config or don't even use them.
Ok, so I got it to work. Still not sure what was the problem, but it seems it was the config. I replaced the model path and texture path in one of my other models and it worked. Now I need to re position seats, wheels, and hitboxes.
I am having problems with one of my recent models, SMZ-S3D. I have triplechecked everything and not sure what is going on here. The model renders in hand and when you throw it on the ground so it cannot be a misspelled model path. The recipe should not matter either, but I did try with and without a recipe. I am currently stuck and not sure what to do. Here is a config, a crash report, and a video showing what is going on. Any help would be greatly appreciated.
Update coming soon. I have fixed lighting problems, some mistakes in the model, and also made it a little more optimized (Now there are roughly 800 shapes comparing to original 1000+). I will also add new cars (Textures). Here is a little sneak peak: