Unity build hanging when loading Init.bnk

Question

On some machines running a build of our game, Wwise appears to hang at this line in AkSoundEngineController.cs:

result = AkSoundEngine.LoadBank("Init.bnk", AkSoundEngine.AK_DEFAULT_POOL_ID, out BankID);

Commenting that line out results in the game working properly (sans audio). Ensured Init.bnk is on target machine, correct size, etc.

(Wwise Integration 2017.2.6.6636.1107)