After Effects CC 2015 - Audio output keeps changing - Won't stay as selected

after effects cc 2015 - audio output keeps changing in prefs - won't stay selected in prefs.

 

every time sleep mac or quit ae audio hardware , audio output mapping changes random. switches default mac speaker, switches airplay, switches built in output.

 

i want stay on built in line output.

 

so every single time use ae audio have go prefs , reset audio hardware "built-in line output" - , set audio mapping "built-in line output".

 

it's driving me nuts! help!!!

 

 

system profile:

 

ae cc 2015.0.1 - 13.5.1.48

 

hardware overview:

 

  model name: mac pro

  model identifier: macpro6,1

  processor name: 12-core intel xeon e5

  processor speed: 2.7 ghz

  number of processors: 1

  total number of cores: 12

  l2 cache (per core): 256 kb

  l3 cache: 30 mb

  memory: 64 gb

  boot rom version: mp61.0116.b16

  smc version (system): 2.20f18

  illumination version: 1.4a6

 

system software overview:

 

  system version: os x 10.10.5 (14f1021)

  kernel version: darwin 14.5.0

  boot volume: macintosh hd

  boot mode: normal

it might time trash ae preferences.

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