I had to uninstall Core Tunnel to work around the Apple Store issue that is preventing in-app purchases. I uninstalled by the official Launchpad uninstall method. Now the App Store will not let me install, it just hangs. First I just get what looks like a download icon:
Then if I click, it hangs with a spinning circle. (I am a new user and cannot attach more than one image.)
I've restarted and tried again but no change. Any ideas how to fix this?