java.lang.NullPointerException
        at org.netbeans.modules.python.debugger.Utils.markCurrent(Utils.java:56)
        at org.netbeans.modules.python.debugger.PythonDebugger.handleDebuggerEvent(PythonDebugger.java:457)
        at org.netbeans.modules.python.debugger.actions.JpyDbgView.newDebuggingEvent(JpyDbgView.java:114)
        at org.netbeans.modules.python.debugger.gui.PythonDebugContainer$_DEBUGEVENT_MANAGER_.populateToPlugin(PythonDebugContainer.java:661)
        at org.netbeans.modules.python.debugger.gui.PythonDebugContainer$_DEBUGEVENT_MANAGER_.populateLocalSource(PythonDebugContainer.java:676)
        at org.netbeans.modules.python.debugger.gui.PythonDebugContainer$_DEBUGEVENT_MANAGER_.storeRemoteFile(PythonDebugContainer.java:876)
        at org.netbeans.modules.python.debugger.gui.PythonDebugContainer$_DEBUGEVENT_MANAGER_.newDebugEvent(PythonDebugContainer.java:1028)
        at org.netbeans.modules.python.debugger.backend.PythonDebugClient.populateEvent(PythonDebugClient.java:169)
        at org.netbeans.modules.python.debugger.backend.PythonDebugClient.access$300(PythonDebugClient.java:21)
        at org.netbeans.modules.python.debugger.backend.PythonDebugClient$_TCP_TASK_.run(PythonDebugClient.java:142)