Successful programming result! Prior to re-energizing the car & new computer, I connected to SDD with the original computer and saved my session files. Upon installation, I had the car & laptop on power supplies. When starting SDD with the new computer, I manually entered the VIN, then imported the previous session (using old computer). All my modules were connected - I thought I was home clear! Instead, the car wouldn't crank (mismatching security codes in ECU and all other vehicle modules)