Replication History Error Message on NAB

I am getting the following error message in the log of my administration server:

07/29/2009 01:12:08 AM Attempting to write invalid timedate to replication history of E:\Lotus\Domino\data\names.nsf: 10/24/**** 09:19:56 PM

I noticed this when our blackberry server was all of a sudden not replicating with our Admin Server. Our BES server is doing a PULL only from our Admin server, and it appears to not have run in a few days.

Any suggestions?