HI! I have a similar problem, the app try to open but then close too. I typed "python2.5 /opt/ytube/ytube.py" and this is the answer: Traceback (most recent call last): File "/opt/ytube/ytube.py", line 311, in <module> YTube.checklogin() File "/opt/ytube/ytube.py", line 302, in checklogin YouTubeDataService.youtubeLogin (username) File "/opt/ytube/youtubeservice.py", line 33, in youtubeLogin YouTubeDataService.ytService.email = unicode (YouTubeAPISettings.userDict [username] [0], "utf-8") KeyError: PyQt4.QtCore.QString (u'MY_YOUTUBE_NICKNAME') I hope this will help you.