Checked Google for this failed sync error = #-1, but not getting much. My Treo 650 all of sudden is not syncing Contacts or Calendar with my Mac Powerbook G4 running OSX v. 10.4.11 with Palm Desktop v. 4.2.1. The latest data is correct on Palm Desktop, not on handheld, so Contacts and Calendar conduits were set to "Macintosh overwrites handheld." Here is a copy of the latest log with strange error message:

Loading “Contacts Conduit”
Conduit “Contacts” version 3.0.0
Sync type is Desktop overwrites handheld
Remote database 1 name is ContactsDB-PAdd
Contacts synchronization failed
“Contacts” failed (error = #-1)
Loading “Calendar Conduit”
Conduit “Calendar” version 3.0.0
Sync type is Desktop overwrites handheld
Remote database 1 name is CalendarDB-PDat
Calendar synchronization failed
“Calendar” failed (error = #-1)

Any help would be greatly appreciated. Thanks!

Treonaut86
Palm 4.2.1.
AT&T Wireless Treo 650
Mac Powerbook G4
OSX 10.4.11