[kdallen]

I've had that error pop up before on my 650. A hard reset and a clean install fixed it. Hopefully, that will work for you.

Do you have an SD card? If so, how about this: getting a backup app (BackupMan, Backup Buddy, etc., I believe they all offer trials before you purchase) and performing a backup. As far as getting the app onto your phone without being able to sync, download and save the .prc file to your pc, then email it to yourself so you can retrieve it on the Treo.

Once you've done the backup, get ready for the hard reset. Make sure to rename your backup folder "backupold" or something, and I'd recommend moving it out of the directory, like to your desktop or someplace. Also, don't leave the card with the backup in for the reset (or at least don't select to restore from your most recent backup). If you have a corrupt file screwing with your sync conduit, you don't want to put it right back onto your Treo.

After the hard reset, do a sync, which will create a new backup folder on your PC. I'd load just your contacts from the old folder, sync again, and see how everything goes. Then, add whatever apps you might have one at a time. That way, if a problem pops up, you can identify it.