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I am getting this error when i m tring to validate my app before submit it to mac app store by using xcode 4.2

While when i m trying to upload app from xcode 4.3 it is fit and fine.

Will it might be possible app uploaded from mac so x 10.7 will not be compatible to 10.6.

Why this error come?

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What's the error says? –  0x7fffffff Sep 22 '12 at 12:29
"The operation couldn’t be completed. Bad file descriptor" as it says in the question title. –  NHDaly Nov 18 '12 at 16:58
Duplicate Question: stackoverflow.com/questions/8423575/… –  NHDaly Nov 18 '12 at 17:04
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