Thank you for the continued effort!
My Brother Utilities lists two printers in the drop-down box at the top. One printer is at my desk (but on the LAN) and the other is across the house, also on the LAN.
First, I tried the name of the printer at my desk. I figure I installed the latest Brother software when I added it to the network recently.
Model=MFC-L2710DW series LAN
then I changed the line to:
Model=L2550DW series LAN
Neither attempt caused the shortcut to open CC4.