Can not drop table due to replication error, though table is not being published

I am attempting to drop a table in a database that is a publisher. The table in question is not being published. The error I get is:

Msg 15021, Level 16, State 1, Procedure sp_MStran_ddlrepl, Line 14 [Batch Start Line 1]
Invalid value given for parameter @procmapid. Specify a valid parameter value.
Msg 3609, Level 16, State 2, Line 2
The transaction ended in the trigger. The batch has been aborted.

I've checked sysarticles to see if there's an old or orphaned record, but the table doesn't appear. Any ideas as to what the issue is here?