Bolide mesh won't show up

I messed with the Bolide in Blender to figure out where to place a camera, and then I coded the camera in. However, now the body doesn't show up, only the wheels. I tried to delete the camera to see if it would help, but it didn't. I went into the game's core files and deleted the .zip and then validated again, but it didn't work either. I have no idea what is happening and I would really like to use this car again soon.

 

No, it hasn't worked. I had the sound mod installed before and it worked just fine, but when I edited the .jbeam for the camera it disappeared. I've already deleted and reinstalled the entire .zip as well and it still doesn't work.

 

Okay, I'll do that next chance I get, thank you. I guess it's pretty easy to delete the game since all you really need to do is move the vehicles and levels folders out beforehand. The edited file was a .jbeam placed in a folder in the vehicles folder in documents, so it wouldn't be deleted with updates. I guess something happened that messed with it too much, so now I have to reinstall. I'm not good at this stuff, I just wanted to put a camera on -_-