You've given us no real information to help you.
What is your operating system? Is CS5 fully patched?
If you use Mac, you should have a crash report. Please post that on pastebin.com, then put a link to it here.
I'm not expert in crash reports, but it seems pretty clear it is the DPS tools that are causing this. I also don't use those at all, but I seem to recall that there are some updates, and that you will have trouble if youare using the wrong version.
There is a dedicated forum for DPS issues: http://forums.adobe.com/community/dps and I'm going to suggest that you re-post there in case anyone already knows the answer, but I'll leave this thread open too in case other users here have some more ideas.