Built and tested without a hitch. Tested Only with 3 strings so far, as cabling (my least favorite activity) is taking me forever.
Programmed it using - ALL - 50 nodes/string - starting address @ 1
Jumpers on board were:
Terminate:closed
Program:closed
Universe: 1-1
Using etherdongle. When sent the data, the 3 attached strings (#1/#2/#3) all flashed white.
Turned power off. Opened the program jumper. Move the universe jumpers to #2 and #2 (my setup in LSP has my mega tree starting at address #4097). Repowered everything and launched a sequence with LSP -> lights working.
Duane, I looked at the pics and couldn't spot anything wrong on the board. The only thing I can think off is to make sure that the cable going from the board to the string, lead to the first node with the chip inside the LED closest to the board.