I am running Mavericks on my Mac. I have downloaded windows 7 and updated lwjgl to 2.9.1. I do not know what to do at this point. Here is my log http://pastebin.com/qphUBPEk
All 1.6.4 Packs Crash Upon Launch
- Thread starter Baby_Cabbage
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Run your launcher with more ram if that does not work delete the pack and re download it. Hope this helped 
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RAM isn't the issue. He's set his launcher to use up to 3 GB, which should be more than sufficient to play any FTB 1.6.4 pack.
I want to double check, but I think with some versions of Mac OS X, you have to manually update LWJGL (I think?), but again I want to double check.
@Ashzification
@lavarthan
Please remind/correct me on this one.
Ah, ok. Thanks. I wasn't sure on the specifics of it. I'll keep that in mind for the future.