Installed the new version (6.0.13.614) this morning. After about an hour or two, I had this.

java.util.NoSuchElementException: Cannot access last() element from an empty List
at org.codehaus.groovy.runtime.DefaultGroovyMethods.last(DefaultGroovyMethods.java:9792)
at com.sencha.idea.action.GenerateModelColumnsAction.addFieldsToColumnsProperty(GenerateModelColumnsAction.groovy:172)
at com.sencha.idea.action.GenerateModelColumnsAction.access$3(GenerateModelColumnsAction.groovy)
at com.sencha.idea.action.GenerateModelColumnsAction$_generateColumns_closure2.doCall(GenerateModelColumnsAction.groovy:112)
at com.sencha.idea.action.GenerateModelColumnsAction$_generateColumns_closure2.call(GenerateModelColumnsAction.groovy)
at com.sencha.idea.index.ClassCache.withCaching(ClassCache.groovy:24)
at com.sencha.idea.index.ClassCache$withCaching.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
at com.sencha.idea.index.ClassCache$withCaching.call(Unknown Source)
at com.sencha.idea.index.ScopeUtil.withScope(ScopeUtil.groovy:27)
at com.sencha.idea.action.GenerateModelColumnsAction.generateColumns(GenerateModelColumnsAction.groovy:71)
at com.sencha.idea.action.GenerateModelColumnsAction.access$2(GenerateModelColumnsAction.groovy)
at com.sencha.idea.action.GenerateModelColumnsAction$_actionPerformed_closure1$_closure5.doCall(GenerateModelColumnsAction.groovy:50)
at com.sencha.idea.action.GenerateModelColumnsAction$_actionPerformed_closure1$_closure5.call(GenerateModelColumnsAction.groovy)
at groovy.lang.Closure.run(Closure.java:486)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:885)
at com.sencha.idea.action.GenerateModelColumnsAction$_actionPerformed_closure1.doCall(GenerateModelColumnsAction.groovy:50)
at com.sencha.idea.action.GenerateModelColumnsAction$_actionPerformed_closure1.call(GenerateModelColumnsAction.groovy)
at groovy.lang.Closure.run(Closure.java:486)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:220)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:178)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:168)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:154)
at com.sencha.idea.action.GenerateModelColumnsAction.actionPerformed(GenerateModelColumnsAction.groovy:48)
at com.intellij.openapi.actionSystem.ex.ActionUtil$1.run(ActionUtil.java:298)
at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:315)
at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAwareWithCallbacks(ActionUtil.java:289)
at com.intellij.ui.popup.ActionPopupStep.performAction(ActionPopupStep.java:223)
at com.intellij.ui.popup.ActionPopupStep.performAction(ActionPopupStep.java:213)
at com.intellij.ui.popup.ActionPopupStep.lambda$onChosen$2(ActionPopupStep.java:207)
at com.intellij.openapi.application.TransactionGuardImpl.performUserActivity(TransactionGuardImpl.java:193)
at com.intellij.ui.popup.AbstractPopup.lambda$dispose$13(AbstractPopup.java:1434)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2418)
at com.intellij.ide.IdeEventQueue.ifFocusEventsInTheQueue(IdeEventQueue.java:177)
at com.intellij.ide.IdeEventQueue.executeWhenAllFocusEventsLeftTheQueue(IdeEventQueue.java:129)
at com.intellij.openapi.wm.impl.FocusManagerImpl.doWhenFocusSettlesDown(FocusManagerImpl.java:159)
at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.doWhenFocusSettlesDown(IdeFocusManagerImpl.java:36)
at com.intellij.ui.popup.AbstractPopup.dispose(AbstractPopup.java:1430)
at com.intellij.ui.popup.WizardPopup.dispose(WizardPopup.java:151)
at com.intellij.ui.popup.list.ListPopupImpl.dispose(ListPopupImpl.java:326)
at com.intellij.ui.popup.PopupFactoryImpl$ActionGroupPopup.dispose(PopupFactoryImpl.java:292)
at com.intellij.openapi.util.ObjectNode.lambda$execute$0(ObjectNode.java:104)
at com.intellij.openapi.util.ObjectTree.executeActionWithRecursiveGuard(ObjectTree.java:183)
at com.intellij.openapi.util.ObjectNode.execute(ObjectNode.java:71)
at com.intellij.openapi.util.ObjectTree.executeAll(ObjectTree.java:133)
at com.intellij.openapi.util.Disposer.dispose(Disposer.java:123)
at com.intellij.openapi.util.Disposer.dispose(Disposer.java:119)
at com.intellij.ui.popup.WizardPopup.disposeAllParents(WizardPopup.java:252)
at com.intellij.ui.popup.list.ListPopupImpl.handleNextStep(ListPopupImpl.java:461)
at com.intellij.ui.popup.list.ListPopupImpl._handleSelect(ListPopupImpl.java:415)
at com.intellij.ui.popup.list.ListPopupImpl.handleSelect(ListPopupImpl.java:361)
at com.intellij.ui.popup.PopupFactoryImpl$ActionGroupPopup.handleSelect(PopupFactoryImpl.java:312)
at com.intellij.ui.popup.list.ListPopupImpl$MyMouseListener.mouseReleased(ListPopupImpl.java:526)
at java.desktop/java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:298)
at java.desktop/java.awt.Component.processMouseEvent(Component.java:6651)
at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3342)
at com.intellij.ui.popup.list.ListPopupImpl$MyList.processMouseEvent(ListPopupImpl.java:583)
at java.desktop/java.awt.Component.processEvent(Component.java:6416)
at java.desktop/java.awt.Container.processEvent(Container.java:2263)
at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5026)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4858)
at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918)
at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4547)
at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307)
at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2773)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4858)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:778)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:751)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:749)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:748)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:908)
at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:846)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:778)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$8(IdeEventQueue.java:424)
at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:698)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:423)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)