Storyline AI text to speech does not export.

I have looked up and seen a few variations of this, but not really a resolution. 

AI text to speech is not included in Rise. So to import audio narration, I need to create the text to speech narration in Storyline, export the file, and upload into Rise. This was also the method demo'ed in one of the AI learning on demands I watched. 

However... there is an issue (as reported by others) in doing this. 

I have a single slide in Storyline and have generated 4 separate AI text to speech narrations. I was able to right-click on the first one and click “export audio” and this worked, and I was able to save the file. However, for the remaining 3 audio tracks, when I right-click and select “export audio” on the track in the timeline, nothing at all happens. If I try clicking the audio track, and select audio tool options from the ribbon at the top > then “Export audio”, I get the error message pop up saying something went wrong. 

Troubleshooting I have tried:

• Open closing storyline, over multiple days.
• Uninstalling and reinstalling storyline
• rebooting pc
• Regenerating the tracks
• moving the storyline file closer to my computer path/onto my desktop

Nothing works. Others seem to have also posted this - is there a fix being worked on?