My problem solved, I tried closing everything up and retrying and it works like a charm.
However... I noticed another problem, my orders are messed up. They are in the database, but they aren't listed in Administration Area > Orders (0 of 0 orders). They aren't even displayed in my previous orders under my account. It says 0 of 0 orders, and the pagination goes like: -4, -3, -2, -1, 0.
Any ideas about this?