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This bug was originally marked as duplicate of bug 258483, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE Dev (Build 20170504-63e15ba37eaa) VM: Java HotSpot(TM) 64-Bit Server VM, 25.91-b14, Java(TM) SE Runtime Environment, 1.8.0_91-b14 OS: Linux User Comments: ilia: 1) Enter new remote host credentials when connecting to a remote terminal 2) Press NO when offered to add key to known_hosts Stacktrace: java.lang.IllegalStateException: Cannot call connect() twice at org.netbeans.lib.terminalemulator.StreamTerm.connect(StreamTerm.java:297) at org.netbeans.modules.terminal.ioprovider.Task$Connect.perform(Task.java:438) at org.netbeans.modules.terminal.ioprovider.Task.dispatch(Task.java:148) at org.netbeans.modules.terminal.ioprovider.Task.access$000(Task.java:76) at org.netbeans.modules.terminal.ioprovider.Task$1.run(Task.java:133) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
Created attachment 164328 [details] stacktrace
Can't reproduce it again. Anywat, pressing NO leads to this confirmation dialog popping out again and again until you press yes.