com.intellij.util.IncorrectOperationException: Cannot bind
	at org.jetbrains.plugins.groovy.lang.psi.impl.GrReferenceElementImpl.bindToElement(Unknown Source)
	at com.intellij.refactoring.changeSignature.ChangeSignatureProcessor.performRefactoring(ChangeSignatureProcessor.java:97)
	at com.intellij.refactoring.BaseRefactoringProcessor.a(BaseRefactoringProcessor.java:133)
	at com.intellij.refactoring.BaseRefactoringProcessor.access$000(BaseRefactoringProcessor.java:61)
	at com.intellij.refactoring.BaseRefactoringProcessor$3$1.run(BaseRefactoringProcessor.java:1)
	at com.intellij.openapi.application.impl.ApplicationImpl$13.compute(ApplicationImpl.java:3)
	at com.intellij.psi.impl.source.PostprocessReformattingAspect.postponeFormattingInside(PostprocessReformattingAspect.java:111)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:263)
	at com.intellij.refactoring.BaseRefactoringProcessor$3.run(BaseRefactoringProcessor.java:2)
	at com.intellij.openapi.command.impl.CommandProcessorImpl.executeCommand(CommandProcessorImpl.java:93)
	at com.intellij.openapi.command.impl.CommandProcessorImpl.executeCommand(CommandProcessorImpl.java:135)
	at com.intellij.refactoring.BaseRefactoringProcessor.execute(BaseRefactoringProcessor.java:69)
	at com.intellij.refactoring.BaseRefactoringProcessor.doRun(BaseRefactoringProcessor.java:14)
	at com.intellij.refactoring.BaseRefactoringProcessor.run(BaseRefactoringProcessor.java:76)
	at com.intellij.refactoring.ui.RefactoringDialog.invokeRefactoring(RefactoringDialog.java:32)
	at com.intellij.refactoring.changeSignature.ChangeSignatureDialog.doAction(ChangeSignatureDialog.java:74)
	at com.intellij.refactoring.ui.RefactoringDialog.b(RefactoringDialog.java:8)
	at com.intellij.refactoring.ui.RefactoringDialog.access$000(RefactoringDialog.java:21)
	at com.intellij.refactoring.ui.RefactoringDialog$RefactorAction.actionPerformed(RefactoringDialog.java:6)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1882)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2202)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
	at java.awt.Component.processMouseEvent(Component.java:5554)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
	at java.awt.Component.processEvent(Component.java:5319)
	at java.awt.Container.processEvent(Container.java:2010)
	at java.awt.Component.dispatchEventImpl(Component.java:4021)
	at java.awt.Container.dispatchEventImpl(Container.java:2068)
	at java.awt.Component.dispatchEvent(Component.java:3869)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4256)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3936)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3866)
	at java.awt.Container.dispatchEventImpl(Container.java:2054)
	at java.awt.Window.dispatchEventImpl(Window.java:1774)
	at java.awt.Component.dispatchEvent(Component.java:3869)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
	at com.intellij.ide.IdeEventQueue.c(IdeEventQueue.java:212)
	at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:176)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:6)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:180)
	at java.awt.Dialog$1.run(Dialog.java:517)
	at java.awt.Dialog$2.run(Dialog.java:545)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.awt.Dialog.show(Dialog.java:543)
	at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show(DialogWrapperPeerImpl.java:48)
	at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show(DialogWrapperPeerImpl.java:100)
	at com.intellij.openapi.ui.DialogWrapper.show(DialogWrapper.java:774)
	at com.intellij.refactoring.changeSignature.ChangeSignatureHandler.a(ChangeSignatureHandler.java:29)
	at com.intellij.refactoring.changeSignature.ChangeSignatureHandler.invoke(ChangeSignatureHandler.java:19)
	at com.intellij.refactoring.actions.BaseRefactoringAction.actionPerformed(BaseRefactoringAction.java:43)
	at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.a(IdeKeyEventDispatcher.java:211)
	at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.b(IdeKeyEventDispatcher.java:77)
	at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.dispatchKeyEvent(IdeKeyEventDispatcher.java:201)
	at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:56)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:6)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)