I have never seen this before, and I swear I have various sync connectors of different version running all around my site, so I will try to take a couple stabs at this/
If it is a problem with your Mac's user profile, try creating a test Admin account on your MacBook and install the connector in that account to test. If that doesn't work, try a different installer: Go to
http://www.testzimbra.com/zimbraDemo...moCreation.jsp and create a Hosted Demo account. Log in and grab an installer linked in one of the emails.
Somewhere in the forums here are instructions for removing ALL of the connector and its files if that helps (as it has for me) with reinstalling a broken connector. Last resort: if there is an issue with your OS install that doesn't like the connector you may try reinstalling though that is pretty extreme, especially considering you have only one Intel Mac available to you.
Hope that helps, it has been working mostly predictably for me, YMMV. I wouldn't want you to be discouraged...you can try calling or bugging Zimbra support as I doubt they would want to flub a sale.