I have cloned an object and I renamed a meshgroup because it borrow its texture from another object.
This works. But in the GMND are entries with the old name. If I delete or rename them my game crashes.
Maybe I could leave them in the package, but I don't like that. What could I have done wrong?

Thanks for helping me

It is already solved, I found this: http://www.modthesims.info/showthread.php?t=313788.