CodeDependency plugin problem

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java.lang.NullPointerException
at com.intellij.openapi.roots.ModuleRootManager.getInstance(ModuleRootManager.java:36)
at com.sixrr.codedependency.utils.i.a(i.java:24)
at com.sixrr.codedependency.utils.a.a(a.java:47)
at com.sixrr.codedependency.utils.a.a(a.java:69)
at com.sixrr.codedependency.utils.a.visitClass(a.java:182)
at com.intellij.psi.impl.source.PsiClassImpl.accept(PsiClassImpl.java:240)
at com.sixrr.codedependency.classneighborsgraph.i.b(i.java:63)
at com.sixrr.codedependency.classneighborsgraph.i.buildGraph(i.java:187)
at com.intellij.openapi.graph.builder.CachedGraphDataModel.checkUpdate(CachedGraphDataModel.java:83)
at com.intellij.openapi.graph.builder.CachedGraphDataModel.getNodes(CachedGraphDataModel.java:47)
at com.intellij.openapi.graph.impl.builder.GraphBuilderImpl.createDataModel(GraphBuilderImpl.java:3)
at com.intellij.openapi.graph.impl.builder.GraphBuilderImpl.buildModel(GraphBuilderImpl.java:0)
at com.intellij.openapi.graph.impl.builder.GraphBuilderImpl.initialize(GraphBuilderImpl.java:65)
at com.intellij.openapi.graph.builder.components.BasicGraphComponent.(BasicGraphComponent.java:47) at com.sixrr.codedependency.classneighborsgraph.j.]]>(j.java:1)
at com.sixrr.codedependency.classneighborsgraph.n.a(n.java:23)
at com.sixrr.codedependency.classneighborsgraph.n.createCustomComponent(n.java:29)
at com.intellij.util.xml.ui.PerspectiveFileEditor.selectNotify(PerspectiveFileEditor.java:201)
at com.intellij.util.xml.ui.PerspectiveFileEditor$2.selectionChanged(PerspectiveFileEditor.java:64)
at sun.reflect.GeneratedMethodAccessor57.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.intellij.util.EventDispatcher.dispatch(EventDispatcher.java:72)
at com.intellij.util.EventDispatcher.access$100(EventDispatcher.java:20)
at com.intellij.util.EventDispatcher$1.invoke(EventDispatcher.java:51)
at $Proxy30.selectionChanged(Unknown Source)
at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl$MyEditorManagerListener.a(FileEditorManagerImpl.java:10)
at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl$MyEditorManagerListener.selectionChanged(FileEditorManagerImpl.java:5)
at sun.reflect.GeneratedMethodAccessor57.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.intellij.util.EventDispatcher.dispatch(EventDispatcher.java:72)
at com.intellij.util.EventDispatcher.access$100(EventDispatcher.java:20)
at com.intellij.util.EventDispatcher$1.invoke(EventDispatcher.java:51)
at $Proxy30.selectionChanged(Unknown Source)
at com.intellij.openapi.fileEditor.impl.EditorComposite.a(EditorComposite.java:52)
at com.intellij.openapi.fileEditor.impl.EditorComposite.access$300(EditorComposite.java:11)
at com.intellij.openapi.fileEditor.impl.EditorComposite$MyChangeListener.stateChanged(EditorComposite.java:3)
at javax.swing.JTabbedPane.fireStateChanged(JTabbedPane.java:290)
at javax.swing.JTabbedPane$ModelListener.stateChanged(JTabbedPane.java:222)
at javax.swing.DefaultSingleSelectionModel.fireStateChanged(DefaultSingleSelectionModel.java:116)
at javax.swing.DefaultSingleSelectionModel.setSelectedIndex(DefaultSingleSelectionModel.java:50)
at javax.swing.JTabbedPane.setSelectedIndexImpl(JTabbedPane.java:478)
at javax.swing.JTabbedPane.setSelectedIndex(JTabbedPane.java:464)
at com.intellij.ui.TabbedPaneWrapper$TabbedPane.setSelectedIndex(TabbedPaneWrapper.java:11)
at javax.swing.plaf.basic.BasicTabbedPaneUI$Handler.mousePressed(BasicTabbedPaneUI.java:3237)
at javax.swing.plaf.basic.BasicTabbedPaneUI$MouseHandler.mousePressed(BasicTabbedPaneUI.java:3391)
at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:222)
at java.awt.Component.processMouseEvent(Component.java:5498)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3135)
at java.awt.Component.processEvent(Component.java:5266)
at java.awt.Container.processEvent(Container.java:1966)
at java.awt.Component.dispatchEventImpl(Component.java:3968)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3889)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
at java.awt.Container.dispatchEventImpl(Container.java:2010)
at java.awt.Window.dispatchEventImpl(Window.java:1778)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:126)
at com.intellij.ide.IdeEventQueue.a(IdeEventQueue.java:62)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:124)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

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