I got all my p2's and D4 hooked up today through the network switch. Ran a test with Da E1.31 and all worked. Thank you to all that have helped me. The penny dropped today when I saw it all working. I also managed to get all the P2's working through LSP which I was stocked with. One thing I am stuck with. Ive got my D4 (port 1) running into Dc48. I was trying to test the harware through LSP. Maybe Ive got this around the wrong way but the element Im using the DC48 is my mega tree and Ive configured the controller for the tree (in LSP) to start at channel 541 and on the D4 port 1 its configure to universe 3. So I ran DA start to change start address on the Dc48 but it wont let me change address to 541. Im assuming thats becuase that would be the last start channel available up to the 512 end of universe?.Then I went to config output plugin I activated universe 3, start channel 541 etc. I know why I cant test the hardware through LSP because I cant change the start address on the DC48 to 541 (I Think) Its baffled me. I know this has something to do with the way Ive set the channels up. Any Ideas as to what/how Im setting up my channels In LSP? Am I setting them up right where you start at Channel 1 and keep going until say channel 2500 across 5/6 universes. If that is the case, how do I set my DC48 and ray controllers to satrt beyond channel 512.