Great! I like your presentations, and want to be your friend. I am a just beginner of Flash Builder, and made some trial type of app to Apple App sore. I am trying to submit .ipa file through Application Loader. Error message says: Applicationfailed codesign verification. The signature was invalid, or it was not signed with an Apple submission certificate. Please help me. Have a great day. Brian 253 222-5976 skoolplusplus@gmail.com