Try updating your computer and then running Onyx in automation mode with all settings checked, including the "clear Web browser cache and history" command. After restarting, clear ALL library preferences referencing Dictionary (there are usually two or more), ensure Safari is set to remember history and the "remove history" option is set to "manually", check "remember me for 30 days" on your Safari Wikipedia page and log in, turn off the new features. It really should work after that.