I had the same issue since 10.8.3

I used to execute:

productsign --sign 3rd Party Mac Developer Installer: MyCompagny <Source> <Destination> --cert Apple Worldwide Developer Relations Certification Authority

The correct use of productsign is:

productsign --sign Developer ID Installer: MyCompagny <Source> <Destination>

--------------------------------------------------------------------------------

I hope this helps.

Regards,

Jim Thomas, CSCIP/G

Jim,

OS X: About Gatekeeper (OS X Lion, OS X Mountain Lion)

http://support.apple.com/kb/HT5290

-Shawn

On May 10, 2013, at 9:31 AM, Jim Thomas <jim@thursby.com> wrote:

Shawn,

I noticed this with our own installers, and in troubleshooting, found it with yours, too.

With Gatekeeper set to default, double-clicking the signed installer pkg results in the following error:
----------------------------------------
"Smart Card Services Update 2.0b2-ML-signed" can't be installed because it is from an unidentified developer.
Your security preferences allow installation of only apps from the Mac App Store and identified developers.
----------------------------------------

Any insight would be appreciated.

Regards,

Jim Thomas, CSCIP/G
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