This has worked forever, until Aperture was sandboxed. sandboxd: ([xxxxxx]) Application(xxxxxx) deny forbidden-sandbox-reinit Is there any way to work around this situation? Or maybe I'll just walk in front of a bus. _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.a... This email sent to site_archiver@lists.apple.com My Aperture plugin uses NSTask to launch a UI application, passing the image to edit on the command-line, then waits for the application to exit. Now, because my application is not itself sandboxed, it launches (which surprised me), but my file dialogs don't work. I managed to sandbox my application, with the extra entitlement to access files in the User's home folder, but when I try to launch it from my Aperture plugin (which is also now signed), I get this error in the console: