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via Stack Overflow by bwillemo
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Connection refused (Connection refused)
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java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at java.net.Socket.connect(Socket.java:538) at java.net.Socket.<init>(Socket.java:434) at java.net.Socket.<init>(Socket.java:244) at com.intellij.idea.SocketLock.tryActivate(SocketLock.java:184) at com.intellij.idea.SocketLock.access$300(SocketLock.java:50) at com.intellij.idea.SocketLock$2.call(SocketLock.java:124) at com.intellij.idea.SocketLock$2.call(SocketLock.java:113) at com.intellij.idea.SocketLock.underLocks(SocketLock.java:157) at com.intellij.idea.SocketLock.lock(SocketLock.java:113) at com.intellij.idea.StartupUtil.lockSystemFolders(StartupUtil.java:263) at com.intellij.idea.StartupUtil.prepareAndStart(StartupUtil.java:101) at com.intellij.idea.MainImpl.start(MainImpl.java:34) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.intellij.ide.plugins.PluginManager$2.run(PluginManager.java:91) at java.lang.Thread.run(Thread.java:745)