Thanks for the response guys.....
D:\GT Legends\GameData\Teams\LM55\Mercedes 300SL is the path to my 300 SL folder and I have 3 subfolders like Hayman listed, plus other stuff like .svm files and MERCEDES 300sl.cas/hdc/sp/grb etc.
The car is certainly available offline and when I'm sure that I tried it on he practice server previously. Maybe I should do a fresh download of the LM55 cars?
Ok, so that path is wrong. Mine would read GameData\Teams\GTC-65\Mercedes 300SL\SL_LM55.
Try moving your folders into the right place. I'll put the Mercs on to the current praccy server now so you can test if you fixed it, Ok?
EDIT: I'll have to wait before I can do the server. Someone else is in there at the mo.
EDIT: Ok now. Merc on Praccy server but not for the race Ok?