hi guys, i had the same issue and found i had a problem with the sound of audi lms ultra 2016(i had the fonsecker sound pack for that).Found my issue was the broken/missing soud from that.When i removed the car from the list everything was fine.Then i tried a practice session with the audi alone and the program told me i had a sound issue with the car.I deleted the fonsecker broken file for soud and put on again the kunos one and then everything worked perfectly