There are a number of issues that cause the sync client to abort - usually leading to a chunk of text on a red background at the top of the client window.
This can be very frustrating, especially if you have a number of issues such as filenames the client handles badly, and the sync stops at each one. You end up fixing one, rerunning the sync and then another error occurs. Of course you can check and fix all the files with the same error - but then another error pops up.
I suggest that the client continues to run and log the errors, bypassing/blacklisting files that cause errors and continuing.
Admin can then view these issues from the log file.