[Doggiebox] Can't export audio files

Had some big plans to revisit DB for songwriting, after flirting with playing real drums. Built a song in 1.4 (Current public release, I think). Export file progress bar just flashes by and produces nothing. Pulled out the beta 1.5 (1G08) and see similar results. Difference is that there is no progress bar. Just nothing. Is there a version that actually produces an audio file? Not trying to be snarky... just really wondering if I should move on or keep trying this song!