DA error after initial connection

[94Blackbird]

Alright, here's my issue. I finally got the car and my computer talking, but it will only connect for something like 5 to 10 seconds, and then I'll get a red DA error. The cigarette lighter fuse is good, and I have all the programs and stuff and followed gregrob's walk through on tuner pro to the T. Anyone know why I would get a DA error after it initially flashes blue and says connected?

[94Blackbird]

Ok, so I went and messed around with it a little today, and it flashes like cherries and berries. A little progress, but still stumped as to what could be causing this?