I have been trying to use custom bumpers from mod trucks in mods for scs trucks. When everything is completed and I click on the mod part in the in-game shop, the game crashes. Import a factory bumper first, then the mod bumper from a mod truck. I use the original bumper as a guide to position the mod, then delete the original bumper (also tried replacing the items within the original bumper with those from the mod bumper). The main object is given a unique name prior to export. Any ideas as to why the game crashes, or do I need to do this completely different? New to ZModeler. Thanks in advance. Note: when I export, there are no errors that show in ZModeler.