Can’t run 1.6

I’m currently undergoing some silly problems because I can’t seem to run 1.6!  I’ve reinstalled the latest 64 bit java, reinstalled my video card update and a few other recommended actions, but am having no luck whatsoever.

Every time I try to run the game it flickers when I click my mouse!  It makes the game unplayable!  I can’t make new content if I am making stuff with old versions (which work perfectly by the way) so I’m stuck till I figure it out!

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Tell me what you think!