BobHartung wrote:
In "System Preferences" there is a "Security and Privacy" icon in the first row. Select the first tab "General". Toward the bottom you can tell the computer what to allow to be installed. It defaults to "Mac App Store".
Also, you do have a password set on your Mac don't you?
Aargh!. Jethro779 beat me to it.
I usually keep my security setting to allow Mac App Store downloads. When I need to download something else, i will
switch the setting, download what I want, and then reset it to its' original state.