Hi Guys, After trying a bunch of stuff, I was able to fix the caterpillar error (interrupting game transfer to hdd) by tracing it to the fact that I was being kicked off of Live for some reason. Never happened before... but something in Destiny was causing it to happen. Long story short -- it was my old non-UPnP router. I had opened ports and forwarded and everything, but Live was never happy with it, and when caterpillar happened, I broke down and got a new router. Cheapo Belkin router, $30 at the supermarket, UPnP built in, plugged it and played it. Got through everything without a hitch, and nary an error since. So, if all else fails... try a modern UPnP router. Sethicorn