A previous company I worked for split in two, one half took on an online training site project and my half built an online website development system. The half that did the training site all hated me because I code by the seat of my pants, sometimes put out work that needed a tweak or two and I wasn't there because I was just up for 24 hours writing it. They took 6 months designing and mapping out there project, they took another 6 months to build it and by the time they were done they had 3 months of money left to make it successful and thus went out of business while my side is still going strong 6 years later. I don't exactly advocate treating users like beta testers, but if you can`t find any more errors put it out, fix anything you didn't find that gets reported by the users, then move on.