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First time an application has been unsupported on my Core Duo (32bit) Macbook Pro. Is there a reason for it, does the application really require a 64bit OS, or did the GitHub guys just forget about us early Intel Mac owners?

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It was intentional. There are differences between the 32- and 64-bit ABIs that make life easier for us to go 64-bit only.

Fair enough, I'd probably do the same if I wasn't a CoreDuo owner myself, especially since Lion's dropping support too.

Wondering the same thing, disappointed to see that I can't try it out :(

I know that Lion will be dropping support for us 32-bit Mac users, but it still sucks to see apps jumping on that bandwagon so quickly.

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