wwise_ima_adpcm immediately closes after opening it

I'm trying to encode an audio file to .stream but for some reason wwise_ima_adcpm.exe refuses to run? (a terminal appears then immediately closes)
I don't know if I'm missing something, but could someone help me with this? thanks.
It's a Command Line program, there's no GUI you can work with. Open CMD, and navigate to the folder with the audio and type in the command below:
wwise_ima_adpcm.exe -e_all