list of error codes How to retrieve Trace Files; (Note: you may need to enable viewing hidden files and folders in Windows to see these folders).  Here is a screenshot  of the example.

On Vista and Windows 7, you'll find your trace files here: C:\Users\<username>\AppData\Local\Google\Google Apps Sync\Tracing\


On XP, you'll find your trace files here: C:\Documents and Settings\<username>\Local Settings\Application Data\Google\Google Apps Sync\Tracing\

Here is the Outlook Log (Trace File) Analzyer and a list of error codes