Address book / Treo 700p sync problem

Hi, I've been happily syncing my address book and Treo 700p using Missing Sync. About a month ago the address book stopped syncing from the desktop to the PDA. Missing Sync can't figure out why. I've not uninstalled missing sync, reinstalled Palm for Mac, re-enabled Palm OS syncing via iSync...and it's still not working.

Here's what I'm noticing: In iSync, when I look a the "contacts" setting (where I can tell it to sync all or just certain groups), the group listings are over a month out of date. It's as though iSync isn't looking at Address Book as it is now, but is looking at it as it was a month or two ago.

FYI, I've also opened Address Book, backed it up, and reverted to address book backup. I also did a soft and a warm reset of my Palm.

Any ideas? I'm stymied and my Palm's useless to me without all my contacts syncing. Thanks!