Is this using Word 2007, and is the data file on a network drive?
If so, it is a known problem and I think the only thing you can do is copy
the data file to a local drive first.
If not, perhaps you could tell us the Word version, what kind of file it is,
and where it is.

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Peter Jamieson
http://tips.pjmsn.me.uk
> When I edit the recipients list, complete the merge and try to close the
> letter and data file, I get a message saying that the data file is read
> only,
> but is isn't when I check the settings. I can open the data file and input
> the info in the table and save it, but not when I edit it with the letter
> open. Can anyone help?