Clean Install of Java on Mac 1 Make sure you are logged in as the adminstrator for your MAC, 2 Open terminal and input the following commands one at a time:. rm -fr /Library/Internet Plug-Ins/JavaAppletPlugin.plugin. rm -fr /Library/PreferencePanes/JavaControlPanel.prefpane This will remove these files, and should allow you to download a fresh version of Java.
3 Visit the and click the 'Free Java Download' button 4 Accept the License Agreement (at your discretion) 5 Save the installer and once downloaded, run the installer 6.
Mac client instructions. You need to have a version of Java installed on your system.
Solution: Clear your Java Client cache. RuneScape stores some files locally on your device. Sometimes one or more of these files can become corrupted and cause problems starting the game. If this is the case clearing your cache may help resolve this issue. Note: After you have cleared the cache it will need to reload again.