AVAudioPlayer initialization: error code -50

Question

I recently ran into a problem that I couldn't find discussed anywhere on the internet - I was initializing an AVAudioPlayer to play an audio file, and getting the following error:

Error Domain=NSOSStatusErrorDomain Code=-50 "Operation could not be completed. (OSStatus error -50.)

As it turns out, I had made a mistake creating my NSURL to send to the audio player init method, resulting in the NSURL object being null. Stupid mistake, pretty easy to find when debugging, but I thought I'd list it here just in case someone else does the same thing.

Answer 1

Make sure your NSURL is valid, or you will get error code -50 "Operation could not be completed".

Answer 2

“ OSStatus error -50” means paramErr, an old-style Mac error code indicating a bad parameter.