i got the following problem, i just downloaded greenfoot and it always says : "greenfoot failed to launch. For help go to greenfoot.org/programming/support/index.html I already tried to reinstall greenfoot several times, but it didn't help at all. Have a 84-bit, Windows 8 computer and Greenfoot 2.3.0 Would me happy, if anyone can help me ! thanks this is my debug log aswell Greenfoot run started: Tue Nov 12 12:07:06 GMT 2013 Greenfoot version: 2.3.0 Java version 1.7.0_40 Virtual machine: Java HotSpot(TM) Client VM 24.0-b56 (Oracle Corporation) Running on: Windows 8 6.2 (x86) Java Home: C:\Program Files (x86)\Java\jdk1.7.0_40\jre ---- Internal error: Could not launch RMI server Exception message: Connection refused to host: 127.0.0.1; nested exception is: java.net.ConnectException: Connection timed out: connect java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: java.net.ConnectException: Connection timed out: connect at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:619) at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216) at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202) at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:341) at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source) at java.rmi.Naming.rebind(Naming.java:177) at rmiextension.BlueJRMIServer.<init>(BlueJRMIServer.java:111) at rmiextension.RMIExtension.startup(RMIExtension.java:60) at bluej.extmgr.ExtensionWrapper.safeStartup(ExtensionWrapper.java:533) at bluej.extmgr.ExtensionWrapper.newExtension(ExtensionWrapper.java:209) at bluej.extmgr.ExtensionsManager.loadDirectoryExtensions(ExtensionsManager.java:164) at bluej.extmgr.ExtensionsManager.loadExtensions(ExtensionsManager.java:100) at bluej.extmgr.ExtensionsManager.getInstance(ExtensionsManager.java:61) at bluej.pkgmgr.PkgMgrFrame.<clinit>(PkgMgrFrame.java:298) at bluej.Main.processArgs(Main.java:132) at bluej.Main.access$000(Main.java:55) at bluej.Main$1.run(Main.java:97) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733) at java.awt.EventQueue.access$200(EventQueue.java:103) at java.awt.EventQueue$3.run(EventQueue.java:694) at java.awt.EventQueue$3.run(EventQueue.java:692) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:703) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138) at java.awt.EventDispatchThread.run(EventDispatchThread.java:91) Caused by: java.net.ConnectException: Connection timed out: connect at java.net.DualStackPlainSocketImpl.connect0(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:579) at java.net.Socket.connect(Socket.java:528) at java.net.Socket.<init>(Socket.java:425) at java.net.Socket.<init>(Socket.java:208) at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40) at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:147) at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613) ... 30 more Commencing network test... Local host address = 10.193.1.147 Local host ip = 10.193.1.147 Addresses for 'localhost': -> 127.0.0.1 -> 0:0:0:0:0:0:0:1 (end of list). Creating unbound server socket... Successful. Creating server socket bound to 127.0.0.1... Successful. Attempting to connect to 127.0.0.1:54401 with NO_PROXY... (!!) Couldn't accept connection: Accept timed out (!!) Exception class: java.net.SocketTimeoutException Creating server socket bound to 0:0:0:0:0:0:0:1... Successful. Attempting to connect to 0:0:0:0:0:0:0:1:54403 with NO_PROXY... Successful. Attempting to connect to 0:0:0:0:0:0:0:1:54403... Successful. Creating server socket bound to 10.193.1.147... Successful. Attempting to connect to 10.193.1.147:54406 with NO_PROXY... (!!) Couldn't accept connection: Accept timed out (!!) Exception class: java.net.SocketTimeoutException Network test complete. (!!) Couldn't connect to local address: Connection refused: connect (!!) Exception class: java.net.ConnectException