Every time I press 'Play' on my Minecraft, it opens and shuts down almost immediately. And it works on my sisters computer! The only computer it does not work on is my Mac desktop computer. Anyone have any suggestions?
Added (1). It doesn't show an 'error' message, it just closes out. I don't know why.
Obviously the error message tells you about the specific cause of the error, while "it doesn't work" is not only redundant but a waste of time and computer memory.
Did you get an error message?
Post the provided stack-trace and error log on
http://www.pastebin.com/
And provide us with the link by editing your question.
Try reinstalling java with the latest version.
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