Error message when attempting to 'open' High Sierra update from app store?
The screenshot below is where I click "Open" on the High Sierra app (from the app store) to install the update. The next screenshot shows what happens after I click "open".
This is the error message I recieve after clicking "open". Any suggestions as to why this is happening? I have a MacBook Pro 17" mid 2010 which, according to support and community inquiry, I'm told should be able to upgrade to HighSierra.
MacBook Pro 17″, macOS 10.12