Tried this. Downloaded correct version of Google earth again. Changed the ipc settings with the about
:config toggling. Installed the plugin into firefox (older version) and still I get the this message;
There was a problem with the Google Earth Plugin.
Exit the browser completely (Cmd-Q on Mac; Alt-F x on Windows), then re-open this page to see it in action.
If that doesn't help, you can re-install the Google Earth Plugin using this link.
I've tried this twice. Now I'm running a Mac but I think I'm still doing something wrong, any ideas mac users?