Hello, Do you use quotes around your identity? The identity comes from your installer certificate. Just open keychain, double click on your installer certificate, and copy the "Common Name" string. Could you post the full command and response? Philip Lukidis -----Original Message----- From: installer-dev-bounces+plukidis=guillemot.com@lists.apple.com [mailto:installer-dev-bounces+plukidis=guillemot.com@lists.apple.com] On Behalf Of koko Sent: Tuesday, July 31, 2012 3:36 PM To: Installer-dev@lists.apple.com Subject: productsign [update] update: I just realized that input and output paths cannot be the same so now I use: productsign --sign "Developer ID Installer" EmbroideryWorks.pkg EmbroideryWorksSigned.pkg and still get the usage error This makes me think the error is in the identity … so how is the identity specified? -koko _______________________________________________ Do not post admin requests to the list. They will be ignored. Installer-dev mailing list (Installer-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/installer-dev/plukidis%40guillemot.c... This email sent to plukidis@guillemot.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Installer-dev mailing list (Installer-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/installer-dev/site_archiver%40lists.... This email sent to site_archiver@lists.apple.com