I am getting a "NULL message from iSync" in the sync log with Missing Sync. I am trying to sync Address book and iCal to a Treo 650. Up until three days ago it worked without a problem. All of a sudden I realized that iSync was not syncing any data.

I am running OS 10.4.2 and Missing Sync 4.0.5. I have not installed the iSync 2.1 upgrade or the Palm upgrade. The thing that baffles me is that it worked well for 3 or 4 weeks and then just stopped. All other conduits are working normally.

Anyone have a clue about what that NULL message error means?