Application failed codesign verification (Updating app)

I've been struggling with this for the past week and can't find a single solution that works. I'm updating my app and when I validate it I get the error:

application failed codesign verification. the signature was invalid, or it was not sign with an Apple submission certificate

When I first made the app I was running Xcode 3.x, currently it's 4.1. I'm using the same distribution profile, 开发者_开发知识库same app ID, edited the archive scheme to use distribution.

Someone please please please help. This is killing me

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Check with these links.Hope you will get in this.

1. Application failed codesign verification. What do I do?

2. How to fix "failed codesign verification" of an iPhone project?