Thank you for your prompt response.
I added .CTL to the list box name, but still no dice. The list box is part of a panel and defined as standard, COLUMN 1, ROW 1, WIDE 75, LENGTH 3. Nothing else as the list box is populated by the program after loading it. I even try to create a new panel with just the list box and still no dice, it gets stuck on LIST_BOX LOAD. What I have is:
LIST_BOX LOAD MY_LIST_BOX.CTL,1,"TITLE"
I know I will encounter some compatibility problems moving to PXPlus but right now this is my roadblock.