Signature no longer valid
I can't upload a new app to the app store with Application loader. The message keeps telling me that "Application failed codesign verification. The signature was invalid, or it was not signed with an iPhone Distribution Certificate"
I've never had this problem before and have many apps on the app store. My membership is valid until March 2012. I'm using the same .p12 certificate I always use and the same distribution mobile provision. I tried re-downloading both certificates and mobileprovision and creating a new p12 in keychain but nothing is working.
What could be the issue?