LifeOnPluto, something similar happened to me during NaNo Camp. I got completely stuck because I hadn't done enough research and worked on my story enough. But I didn't want to give up either, so I just decided to spend some time with my characters and simply go for the 'NaNoCamp Win'. I wrote pretty random scenes (some even go into the imagined backstory of the characters), whatever I felt like.
And now, for NaNo this year, I am really writing the story. I completely redid the timeline, changed some characters, dropped a few, added a few, changed the ending I had at first imagined - but I can reuse or rewrite some of the stuff I wrote during Camp. I actually find that it helps. So, basically, it wasn't a complete loss to just write something, anything, even if it just helped me to find out what I didn't want the story to be like.