Yep, the data is there. Actually, I'm publishing from the same box that Server is running on, so the data is not actually copied anywhere. It's in the same location where ArcMap is getting from and the directory is registered as a data store. There are other file GDBs in the same path hosting data that the service is displaying. The layer that does not render does display in the legend.
How do I proceed from here?
TIA,
Alan