[whpalmer4]

Do you by any chance use MobileMe to sync your iDisk as well? If so, are you storing your OmniFocus database in the default location (Documents folder on iDisk) or have you switched to using the Backup directory?

As I recall, whenever this happens, OmniFocus writes out a copy of the database back to the server prior to blowing it away and replacing with the one on the server. You should be able to recover the data from before you agreed to replace the database if my recollection is correct. I suggest you call Omni's support ninjas in the morning at about 10AM Pacific time and they can walk you through the process as well as capture any troubleshooting data that might remain.