When I check the hsync.log I see the following error logs:
E03020028: The File Agent error for item <server>\\<path>\harvest.sig : Can't open signature file.
Harvest 12.5 client
harvest.sig file was being included in checkouts. Error gone since the moment that the .sig file was not delivered.
Do not include harvest.sig as part of checkouts
As always, please contact CA Technologies support for CA Harvest Software Change Manager if you have further questions.