I have received several bug reports about version 1.3 of iSyncIt closing after the sync has been completed. I have now narrowed down the cause of this problem and will rectify it ASAP. For the moment you can use the previous version of iSyncIt by downloading it from:
Update: The crash appears only to affect Intel Macs, I’m looking into the issue and hope to have a fix sooner rather than later.
Update: I have now (at least I think) fixed the bug that has been plaguing iSyncIt on Intel macs. The new version of iSyncIt is 1.3.1 and you can download it here.
Check back soon.