Export to innerspace failed

I've received this error 2 or 3 times now over the past couple of months. It's seemingly random. I make a small change to my config and then I can't export. Even if I revert the change I made, it's like it gets stuck like this and never can export.
Is there an easy fix to this? So far I've had to reload a backed up profile as the only way to resolve it - just wondering if there was an easier way.