Hi, I have this problem with certain DLC car mods and I will list them here :- 1950's Sportscars, 600cc Sidecars, Formula BMW, F1 1951, Vintage Road Racers, F1 1974, F1 1978, USAC 1978, CART 1987, S5000, Angus's Fantasy Supercars. I can load a track and drive all of these mods in "Private Testing" mode only. I have many other mods in which I can race against the AI with no problem - so why not the ones I have listed ? I have tried several different settings but to no avail. Does anyone have any idea why this problem might be caused with these mods ? I should mention that I do not race online, preferring to stick with solo racing against the clock or short races against the AI, when I can. Cheers.