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

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?