Hi Jeff, I just had a look at the current cvs code of Piper, and I got the same error you have about the DL-BL connection. After I done some it worked again. This is what I did: 1. rm ~/piper_info/BL_status_save 2. rm ~/piper_info/pids/* 3. Export the VFLOW path I think the problem is that ./runpiper executes the BL too soon after the PL is still booting up. If you know how to build in a delay before the execution of the BL the problem is probably gone. Could you check this out, I tried to find the Python code for a delay, but couldn't find any. jarl