AirFoil 4.5.6, Lion, and crashing problems

If you have recently upgraded to Rogue Amoeba’s AirFoil 4.5.6 and are running Mac OS X 10.7 Lion, you will most likely experience unavoidable crashing with Scrivener on start-up. In fact a number of applications have been impacted by the bug, so if you have general instability and are unsure of whether or not you have updated, you might want to check this out. They are well aware of the problem at this point, so there is no need to report it to them. They’ve posted more details, including instructions on how to downgrade to 4.5.5 on their blog:

Just an update on this, for anyone who runs into crashing problems as described, Rogue Amoeba now has a version 4.5.7 that fixes the problem, so you do not need to downgrade as described above.