Have you set up the smaller container fields as buttons?
Did you define the auto-enter calculation specified for the large size container field? (This is a field option you can see if you double click the field's definition in Manage | database and then select calculation on the auto-enter tab.) And then there are OnObjectModify triggers on the container field that commit the record just as soon as you drag a file onto the container field.
The smaller fields are set up as buttons that enter the field's name into the Selected File field. The auto-enter calc then uses getField() with the field name stored in this field to copy the contents of the smaller container field that you clicked.
Thanks for the reply, I do not have them set up as buttons nor did I find the OnObjectModify triggers. I did find the calculations and copied them to my new layout, changing the references accordingly to match my new data fields. I thought I had studied the Starter Solution, looks like I need to go back and study some more taking in to account the new info you have provided here. Maybe I can figure it out then.
Thanks for the help,
If you right click a field while in layout mode, you can select script triggers from the menu that pops up to see what triggers have been selected.