iOS crash on simulator when system output other than macbook speakers or headphones

[demym]

Hi,

i'm experimenting the following crash running the iOS app with AUV3 on simulator; if the output of the device (in this case a macbook) is on something other that macbook speakers or macbook headphones, the app crashes almost immediately on simulator, with the following messages:

Even if it's only on simulator, i experimented the same on real iphone device: if no external audio interface is connected, the app and plugin launch (at least), otherwise it crashes. That's the main reason i'm writing about it.

Thanks very much in advance !

[olilarkin]

We now catch the exception that occurs in the simulator for plugins that require the microphone input. Unfortunately there the mic input node gets an invalid samplerate and channel count. I believe this is a bug with the latest simulator. Instrument example works. Regarding AVAudioEngine fixes on device, that will be improved in #1056

see 82487e0