danielpervan wrote:Sorry for reviving an old thread, but since I also had this problem I thought I should document the problem and how to solve it.
I'm not sure what caused it (perhaps some botched updater acting up), but I found that for some reason there were copies of a bunch of different versions of Airfoil located in ~/Library/Application Support/Airfoil/. Simply deleting them seems to have solved the problem for me.
I just experienced the problem documented in this thread after updating Indigo. When I looked, I also had old copies of Airfoil in this Library location. They went all the way back to when I first installed Airfoil, so I'm not sure what was different about this update to 6.1.11 that triggered it.
I also discovered that while that library location had Airfoil 5.1.2 in it, my application folder only had 5.1.1 in it, so perhaps something happened with my last update of Airfoil also.
When I cleared the old copies out, things went back to normal.