I can't find the solution for this problem for 2 weeks!!! That is enormous.

When I try to validate my app I face an error. Xcode shows: Valid signing identity for ... not found. I don't know what do and I have tried a lot. Please help.

Here are the print-screens:

Image1 http://img838.imageshack.us/img838/9749/20120910195154.png Full Size

Image2 http://img100.imageshack.us/img100/9126/20120910195440.png Full Size

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