Export errors

Hi! I’ve been using Toon Boom Harmony 12 since December. I haven’t had many problems with exporting/importing that couldn’t be fixed by running a clean install of QuickTime, but this time I’m stumped. I got this error when trying to export:

QuickTime Server: E 15:50:52.138 QuickTime Error: Failed to get data reference from the movie file path.

I’m not sure what this message means, but 15:50:52.138 looks like a MAC address to me, although I’m not sure what that would have to do with anything. I tried doing a clean install of QuickTime, but it didn’t seem to work. Any help or suggestions would be appreciated. <3