HT5678: Safari: "Manage Website Settings…" lets you enable the Java web plug-in website-by-websiteLearn about Safari: "Manage Website Settings…" lets you enable the Java web plug-in website-by-website
Currently Being ModeratedMay 12, 2013 10:46 AM (in response to mjavier)
Usually means another instance of the Application is running, likely in another user account. Either go to the other account(s) & close it, or restart the mac & try again.
Activity Monitor (Applications/Utilities/) when the filter is set to 'all processes', may show you Safari running somewhere.