There is a new downloader on the website. This one is like the WoW installer. The one I got the other day kept giving me the "insert cd blah blah" error. So I decided to go back to battlenet and redownload it. It is totally different from pre-download. This pre-download defeated the purpose of downloading it earlier if it was so buggy. Wish they did this in the first place. Blizz should know better...but I still love them. I have patiece to get back to the world of DIABLO!!!!!