old topic... but still a problem and no good solution in this thread.
2 ways to "fix" it:
1. choose dlc from the menu und press back... you don't have to redownload it! (don't waste your time)... you only want the dlc check (and of course a successfull one without error message) ... you maybe have to repeat this step 3 or 4 times, but its totally random.
2. play offline... for some reason i never have this problem if i play offline... if your going for mr. perfekt with bass, its probably the best solution, because you have to reload many times and every time this error can reappear.