This error normally occurs because of user permissions to certain mapped drives. Try configuring LogMeIn Backup on the source computer to run as a Windows Account with access to the mapped drives. You can do this by performing the following:
- Launch LogMeIn Backup on the source computer and choose User Settings.
- Next choose the Scheduled Backups option.
- Then choose the Run Scheduled Backups on behalf of: and enter in a Windows Account that has access to the mapped drives.
- Finally, choose Save Settings.
Once done, please edit the backup set, and go to the Schedule tab. You do not need to change anything here, just go to the tab, and choose Save Settings. This will apply the new login information to the existing set.