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java.security.AccessControlException: access denied ("java.util.PropertyPermission" "java.net.useSystemProxies" "write")	at java.security.AccessControlContext.checkPermission(AccessControlContext.java:364)	at java.security.AccessController.checkPermission(AccessController.java:560)	at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)	at java.lang.System.setProperty(System.java:783)	at ensemble.Ensemble2.(Ensemble2.java:77)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:399)	at java.lang.Class.newInstance0(Class.java:370)	at java.lang.Class.newInstance(Class.java:322)	at com.sun.javafx.applet.FXApplet2.init(FXApplet2.java:63)	at com.sun.deploy.uitoolkit.impl.fx.FXApplet2Adapter.init(FXApplet2Adapter.java:207)	at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)	at java.lang.Thread.run(Thread.java:722)