I am actually still using Adobe Creative Suite 5 (CS5) at home. Recently I’d updated to a more recent iMac and found it impossible to re-instal Design Premium. Was using the official disk image – freshly downloaded from my Adobe account.
This was the pesky error message:
“Install.app” can’t be opened. You should eject the disk image.
The solution is simple – as (finally) outlined by Adobe in their help docs here: Installing Creative Suite on macOS 10.12 (Sierra):
Launch the installer binary from the command line.
- In the Finder right click on the Install.app and select “Show Package Contents”
- Navigate to Contents/MacOS/install
- Drag this binary onto a blank Terminal prompt and hit enter.
Follow the link above from more info from the nice Adobe folks.
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