iSync's log contains useful, easily-understood messages that can help isolate issues.
When iSync is used to synchronize data among devices, it generates a log containing information about what data and devices were synchronized. This information can be helpful in isolating and resolving issues in iSync.
You can see this log by choosing Show Logs from the Window menu, or by pressing the Command-L keyboard shortcut.
Information contained within the log is organized and easy to read. Error messages are in colored text so they can be easily noted.