Sounds like you have a field from the wrong table set up with your drop down list or popup menu of company names so that you are editing a field from the company table. You can enter layout mode and double click the field to open up the specify field dialog in order to select a different field for this layout object.
Thanks for the speedy response, just checked this, and all seems fine......
Note the two colons to the left of the field name: ::Company Name.
This tells me that this field is from a different Tutorial: What are Table Occurrences? than that specified for this layout and this is consistent with what I have speculated is the cause of your trouble.
Then I look at your screen shots more closely and "show data from" in the inspector shows me that the field is from an occurrence named "Company Addresses". I then look at your value list set up and see that the values are from a table occurrence named "Comany Addresses". This would seem to be exactly the problem that I guessed was the cause of your trouble.
Enter layout mode on this layout and note the name to the right of "Table:" in the status tool bar. I predict that it does not read "Company Addresses" nor should it. You need to set up a field from your layout's table that is formatted with this value list.
And the penny drops....
All sorted now.
Thanks again Phil