First, the message works fine in the designer's previewer.

Second, the message started appearing ,in run, when I first put it
together, so the structure was what it was.

To try to figure it out, I created a dummy table (same name) with 1 field,
removed all the old fields from the table, and adde the dummy report. Same
problem.

As far as linking, I had originally NOT linked them, because they didn't need
to be. Table 1 is report title infomartion. Table 2 is report detail info. So
there's no need to link.

I did however link them via a common key to see if that was it, and I get
the same problemm

Sidebar - The message "This field name is not known" is rediculous. That
tells me absolutly nothing!