This usually does the trick for me if a video stalls out:
• Close out your project, and sign out of Rush and Creative Cloud.
• RESTART YOUR COMPUTER, and make sure you don't have any memory-intensive ("RAM-hogging") apps running while you're starting up (I never run Photoshop, Illustrator, or Microsoft Office apps while working on videos).
• Sign back into your Creative Cloud Desktop App.
• Hold CTRL + SHIFT buttons while starting Adobe Rush - this will tell Rush you want a "fresh start" without losing your projects; it will open the Starter Tutorial like you were starting for the first time - simply close the tutorial, and your projects will be available.
• Open your project, and BE SURE TO WAIT for it to FULLY SYNC. Then try editing and/or exporting, and you should be good to go... but just in case:
IF NEEDED:
• double check that any Adobe Fonts you may be using are activated and connected
• re-add any missing assets to the project bin
Last Resort: DUPLICATE the project and try working from the fresh copy.
Hope this helps!
It worked!!! Thank you SO much! I thought all of my work was for naught, but it exported perfectly after restarting my computer, signing in/out of creative cloud and restarting Rush with a "fresh start". Thank you so much for your assistance!