Problem with TeamEditor

Hi guys, i have a strange problem with TeamEditor since when i installed the new mercedes w07 by RSCT in my cars.wad: it works fine when i select all the other cars but when i select mercedes slot it gives me these errors (Erreur E/S 998, Operation de pointeur incorrecte) and then i have to close the program.
It's strange to me 'cause TeamEditor works fine with all the other cars.wad i use, i have this problem only with the new mercedes installed.

any idea?
anyone have same or similar problem?

thanks.