It is SQL 2000. According to what you are saying, I have probably damaged the publication. My FK's are not set to "Not for Replication". I am giving serious thought...

Here's the history. Certain records were not replicating to a particular subscriber due to what I thought might be foreign key constraints. So I remove the FK from the subscriber...

It's a merge replication and I don't believe the distribution agent is failing but rather the generating of the snapshot is failing.