Hi Bristol.
Is this file still not exporting?
If it's not, a couple of questions:
* Is there anything unusual/different about it (I had someone else having trouble exporting to Dropbox with a very large file)?
* Have you or are you having trouble exporting any other files? If you haven't tried, please try.
* How's your wifi network? Pretty strong/consistent?
Anything else you can tell me will be helpful.
Sue.