Hi! I have the problem many people are having with the "AN UNEXPECTED DECRYPTION ERROR OCCURRED" so I looked at the sticky and it told me to do this:

"Your installation folder should not have any files with the .Part extension. If it does, it indicates the downloader was closed prematurely. Restart the downloader in this case, selecting the same location the "Diablo-III-8370-enUS-Installer" folder is in, and it will check the existing files and download what's missing. It's important to let the downloader finish on it's own. It will start the "Diablo III Setup.exe" file when it's done. It can take a while so please be patient."

So I thought simple enough right? No such luck. When ever I try to restart the dowloader and select the location Diablo-III-8370-enUS-Installer it doesnt fill in the parts which are not installed (.part) it just downloads a second Diablo-III-8370-enUS-Installer in the previous Diablo-III-8370-enUS-Installer which doesn't help at all! Please tell me how to do this correctly. I will be forever in your dept! I want to play the game when it launches in Australia god dammit! xD Thanks in advance!