Originally Posted by Freeloader

Due to a change in JDownloader 2 beta (or possible bug) it is possible that your JDownloader might close itself and never start again.

In order to get your JDownloader 2 beta version running again please open your main JDownloader directory (folder) default path; for windows is located at "C:\Program Files\JDownloader" and run the updater.jar , this will sort out the problem.

Sorry for the inconvenience

Your JD-Team,