Cannot launch another application in Mac OS X 10.8 using NSWorkspace launchApplicationAtURL:options:configuration:error

Question

I am launching another app using NSWorkspace launchApplicationAtURL:options:configuration:error.
The app is owned by root, has permission: rwx r-x r-x, and owned by root:wheel.
The app is also located in /Applications folder (e.g. /Application/MyApp.app).
According to the following link under the "Launching Helpers with Launch Services" section:http://developer.apple.com/library/mac/#documentation/Security/Conceptual/AppSan dboxDesignGuide/AppSandboxInDepth/AppSandboxInDepth.html
I should be able to launch my app because the following condition is met:
The app is installed in /Applications and the app bundle and all contents are owned by root.
When launching the app, I get the following error:
"The application “MyApp” could not be launched because it is corrupt."
"The operation couldn’t be completed. (OSStatus error -10827.)"
Which is, according to the same link, the error when none of the conditions have been met.
Note that I am using Mac OS X 10.8. In Mac OS X 10.7.5, I don't encounter the same issue.
Note also that I am trying to run the app "MyApp" inside a sandboxed application.
I tried using 2 builds of "MyApp", but in both builds, the issue can be replicated:
Code-signed (using a self-signed certificate)
Not code-signed
What seems to be the problem? Am I missing something?

Answer 1

Yes, but it also says in the apple documentation that:
A sandboxed app is allowed to launch a helper using Launch Services if at least one of these conditions has been met
Even if I did not pass the condition:
Both the app and helper pass the Gatekeeper assessment. By default that means both are signed by the Mac App Store or with a Developer ID.
I am pretty sure that the following condition has been met:
The app is installed in /Applications and the app bundle and all contents are owned by root.