This has been working fine for several years until this ...

When I open a Word merge document, this message appears: "Error has occured: Record(s) cannot be read; no read permission on 'Data'."

'OK' brings forth "...Word cannot find its data source...." with a button to 'Find Data Source.' I select the correct data source file, and am returned to "...Word cannot find data source..." with the "Find Data Source" button.

The person who created the data source is experiencing the same problem with his personal login. He logged in as Administrator and gave me full rights to edit the data source. We've restarted our computers several times since then, and both of us receive the same error messages.

I've run "Compact and Repair" without any change.

What should I try next?