STB 4.2 - Audio not exporting and settings reset by itself

Hey there. I’ve been trying to export to a Quicktime movie via Storyboard 4.2, but the clip always seem to be missing the audio.

I’ve rechecked the files (the audio wave is visible, audible during playback and scrubbing, the formats are compatible with existing codecs in my computer station, timed accordingly to fps preferences), but every time I check the settings, it always unchecks the audio and keeps resetting the video settings by itself (even before I hit the export button), so I am unable to export and test the clip with other video+audio options as well.

I’ve reset all my previous settings to default, reinstalled Quicktime and tried to comb for any naming or codec incompatibilities, but still no dice.

Is there something I’m missing?