[launchd-dev] SMJobBless sample code not working

Hi folks, I am currently migrating my code to Lion by removing any AuthorizeExecuteWithPrivileges call. Last week, I downloaded SMJobBless sample code and I could build and launch the app successfully. Everything worked as expected and I could see that the service was available. Now, I can't get it to work any longer, the only information from the system log is 27/10/11 16:41:49,784 launchdadd: FAILURE: Job com.apple.bsd.SMJobBlessHelper could not be installed from .../build/Release/SMJobBlessApp.app/Contents/Library/LaunchServices/com.apple.bsd.SMJobBlessHelper, reason 3. Any clue ? TIA