Optifine Ultra C2 seems to be working with Nether, didn't crash when I tried it.
Same with crashes when making a new SSP world.
But still, use at own risk.
Anywho, here's the settings I'm using Obie:
http://i1183.photobucket.com/albums/...y/optifine.jpg
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Dear diary,
Today, I made my first mass fabricator which I placed next to my compressor.
It didnt look quite right sitting there next to the inferior machine, so I fired up
my diamond drill and broke it, so I could move.. FUUUUUUUUUUUUUUUUUUUUU-