Mac OS X 10.9.2 attempting to install Flash Player 18.0 on Safari 7. Have been through the usual troubleshooting page, nothing has so far worked. It has gotten to the point where I have uninstalled my previous Flash version, but midway during download, once again the only explanation comes up Installation failed. I have checked that everything is enabled so I do not think this is the problem here. Can someone help me please?