MyCraft bug fix: Black screen with new launcher
A bug caused by the new launcher has been fixed in this version. This will only fix black screens before the login screen. If you get them during the loading screen, get the output by running with console and we can help you on irc.
Link to MyCraft Page: http://www.frustra.org/mycraft
Link to MyCraft Forum Topic: http://www.minecraftforum.net/viewtopic.php?f=25&t=153315
Link to MyCraft Support IRC: #mycraft on irc.strictfp.com