Hello,
With apologies; there had been a follow up on this and I intended to post a follow up here, but failed to do so.
An example .wav file was sent to me which appeared to be encoded with mu-law compression, which is not supported by our own .wav file reader. It is then possible to have the audio samples extracted or produced by one of two so called ‘native’ frameworks, AVFoundation or FFmpeg, as available in the Edit Preferences window in the Platform/OS tab. Both options may fail, for different reasons. In case of .wav, it is best to use an encoding without compression.
But it may be that in your case something else is going wrong, for that we would need the output of the log file, as described in the earlier post.
-Han