are you getting the weird error saying there's a version already installed? If so, you will probably need to do a fresh download because the last few older versions broke the updater. 0.44 added in a new thing to basically check if you are on an old version and have a new prompt on the main screen to show there's an update available along with it linking to this site. If you are having a different issue, maybe putting details will help you get answers :P