Changing options in drop-down box for "Insert Merge Field" in creating labels?

The Insert Merge Field drop down will display a list of the fields in your data source.

There is no compelling requirement to use the Address Block or the Match Fields utility as you can insert the individual fields from your data source in the configuration that you want them.

The options listed this morning have become one option. It lists in succession, with no separators, First nameLastnamePrimaryAddress1_PrimaryAddress2, etc.  They are not able to be deleted by any means I know, and I am unable to select one at a time. The data in Excel do have headings that match the default Word options in row 1. I want to be able to delete what is in the drop down box and get the right headings in there.

If I click on the Address Block and then click on "match fields", when I click on "First Name" the automatic fill in lists the string I identified above. I don't know how to delete that string and get just "first name" to appear there.

Make sense?

Sounds like there must be an issue with the data source.  Are all of the field names in separate cells in the first row of the Worksheet?

Perhaps the workbook is corrupted.  Try copying the data to a new Workbook and then attach that as the data source.

If that doesn't help.  Change the type of Mail Merge Main Document back to a Normal Word Document (which will remove any data source connections to it) and then change it back to the type of main document that you require and then use the Select Recipients to attach the data source again.

And if that doesn't help, try repairing the Office installation as detailed in the Knowledge Base article at:

http://office.microsoft.com/en-us/excel-help/repair-or-remove-office-2010-HA010357402.aspx

Bless you, Doug Robbins!

Apparently the workbook was corrupted. The new file fixed it. The labels are printed! Thank you so much!