Lost quest bubble
That's happened to me too. I wouldn't worry too much about it. Chances are it was just one of the random tasks that pop up from time to time. If you're currently involved in a questline, check FAQs and Guide section. There are walkthroughs posted in the sticky section at the top for just about everything. You can check your progress there and see if Krusty was needed for anything.
This discussion has been closed.
That would have been a standard random task that popped up nothing more, the questline wouldnt vanish so it all good there.
When you get a random task pop up and lets say you didnt want to do that one for what ever reason just go to either the friends screen of KL and come back to you town that random task would have vanished and possibly given you a new one to do