Sometimes QuickBooks throws an error with little description or help as to the problem. The following steps are the safest way to fix these problems.
- Shut down LMN Sync
- Reboot your computer (note: if your QuickBooks company file is hosted on a different machine or server, you must also reboot the server/other machine)
- Restart QuickBooks after reboot is complete
- Make sure all windows in QuickBooks are closed except for the Home screen
- Re-open LMN Sync
Retry the export.