Installation of *.pkg fails to due to invalid digital signature
I am a facing a strange issue, installation of quite a few pcakges downloaded from known/trusted sites fails due to invalid signature. To name a few, MS Silverlight, Google video chat pluging and GNU Emacs.
Please see the attached image for error message when I tried to install google chat pkg. It is strange that, digital signature verfication fails every single pacakge. Any clue what is wrong and how can this problem be resolved.
It looks like you're having issues installing some apps. We'd be happy to help.
Is this only happening with Google Voice? Or does this happen with any app that you're trying to download? Also, we'd like to have you take a look at the following article that will guide you through checking your settings to make sure you can allow apps to be downloaded to your Mac.
Safely open apps on your Mac
This should help.