I am having intermittent problems with text-to-speech in Articulate Storyline 360.
There are time when I have to go back into a page/slide and correct or adjust audio. Sometimes in the most random fashion, I make the change and then click update/save, when I then go to preview the page/slide or preview the scene and then get back to that page, the audio won't play at all. The audio is there. I can see it. I can even edit it if needed but when I try to play it, I can't hear it.
The only fix to this so far is that I have to create a completely new slide/page. Recreate all of the elements on that slide/page. Then add the audio from text to speech to the new page and sometimes that fixes it on the first try.
Often times though, I have to do this fix more than a few times before it takes. It's really odd and strange.