I'm not sure if this was the reason, but I had a dash (like -) in my entry essay. As soon as I took it out (immediately after a failed attempt, actually), it went right through. I'd try removing any special characters (; : " etc.) that sometimes cause automatic entry forms to balk. Would be nice though if the "oops" error suggested if it was user or server error and what maybe to look for if that was, in fact, the reason it didn't go through the first two days I tried.