Hi,Can you provide us with some additional information regarding the application you're trying to sign?Did you have both apps(the .ipa and Signer Tool) on the same machine? Or did you try to sign the app from a different volume, remote machine, etc.?Signing a different application works? Or all signing attempts fail with the same error message, for any app?Also, if you can provide us with the .ipa that triggered the initial error, it would be of great help for us in debugging the problem.Thank y...