So far as I've seen, it doesn't appear that this bug has been acknowledged by the developer. This bug apparently has been mentioned in several other open requests in the past: https://sourceforge.net/p/googlesyncmod/bugs/1411/ https://sourceforge.net/p/googlesyncmod/bugs/1410/ https://sourceforge.net/p/googlesyncmod/support-requests/1026/ I've rolled back to 4.1.33 which doesn't exhibit this issue that 4.2.1 did and just ignore the 4.2.1 update nag message when running/using the program.
None that I found, I just rolled back to 4.1.33, and then just ignore the new version nag notice every time I run the Googlesyncmod application and do a sync.
Roll back to version 4.1.33 and it should sync properly without the errors one gets n 4.2.1.
Probably the same or similar issue as reported here: https://sourceforge.net/p/googlesyncmod/bugs/1410/ https://sourceforge.net/p/googlesyncmod/bugs/1408/
Sounds like the same or similar issue mentioned here: https://sourceforge.net/p/googlesyncmod/bugs/1408/ And earlier in the Support subforum: https://sourceforge.net/p/googlesyncmod/support-requests/1026/
Can confirm. Both 4.2.0 and 4.2.1 have the issue in my setup. Downgrading to 4.1.33 and the sync runs correctly, without this issue.
V4.2.1 - Every sync indicates "Updated from Google to Outlook"