Hi David,
Yes, I have Dropbox set. I am still having the same problem "Abort this run: the backup_time parameter appears to be empty..." Although I have deactivated and let the backup run and finally reactivated all plugins one by one since the backup running fine, and all of sudden got the same message with next backup schedule.
Please let me know what do, My backup sets showing Not Complete because of that.
Thanks,
Imad