foos

An Exception is thrown in the applet: CacheEntry[http://www.greenfoot.org/sharedjars/jl1.0.1.jar]: updateAvailable=false,lastModified=Fri Aug 17 07:49:55 EDT 2012,length=143160 java.security.AccessControlException: access denied ("java.io.FilePermission" "instructions.txt" "read") at java.security.AccessControlContext.checkPermission(Unknown Source) at java.security.AccessController.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPermission(Unknown Source) at sun.plugin2.applet.AWTAppletSecurityManager.checkPermission(Unknown Source) at java.lang.SecurityManager.checkRead(Unknown Source) at java.io.FileInputStream.<init>(Unknown Source) at java.io.FileReader.<init>(Unknown Source) at Instructions.readInstructions(Instructions.java:21) at Instructions.<init>(Instructions.java:15) at Table.<init>(Table.java:37) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at greenfoot.export.GreenfootScenarioViewer.instantiateNewWorld(GreenfootScenarioViewer.java:323) at greenfoot.export.GreenfootScenarioViewer.init(GreenfootScenarioViewer.java:226) at com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter.init(Unknown Source) at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) at java.lang.Thread.run(Unknown Source) looks like you are trying to read instructions.txt from a local file, I think you will have to change that to something like this http://docs.oracle.com/javase/6/docs/api/java/lang/Class.html#getResourceAsStream(java.lang.String) not sure since the source is not here.