codesign failed with exit code 1

See more:

C

Mobile

iPhone

Objective-C

Xcode

Please help , i just wan to run my old code , but its not working .. i have a 4.2 os ipad and the code was working fine before i ugraded my mac book to lion..

/Volumes/Development/XIAPSUIT 26-aug-2011/build/Debug-iphoneos/XIAP.app: object file format unrecognized, invalid, or unsuitable Command /usr/bin/codesign failed with exit code 1

Please guide...