I just logged in to your account and ran through the ad creation tool. Everything worked fine and I was able to go all the way through step 5. I have however heard of one other person who had the same problem a couple of days ago. What web browser are you using? Version? Do you have a pop-up blocker installed? If so, what flavor and version? Even though we do not use pop-up's in that tool, do you have the blocker configured to allow RCUniverse.com?