java.lang.AssertionError: Start offset must be before the end offset. startOffset = 28, endOffset = 27 at org.netbeans.spi.editor.highlighting.support.OffsetsBag.addHighlightImpl(OffsetsBag.java:491) at org.netbeans.spi.editor.highlighting.support.OffsetsBag.addAllHighlightsImpl(OffsetsBag.java:724) at org.netbeans.spi.editor.highlighting.support.OffsetsBag.addAllHighlights(OffsetsBag.java:184) at org.netbeans.modules.editor.lib2.highlighting.CompoundHighlightsContainer.updateCache(CompoundHighlightsContainer.java:302) at org.netbeans.modules.editor.lib2.highlighting.CompoundHighlightsContainer.getHighlights(CompoundHighlightsContainer.java:170) at org.netbeans.editor.HighlightingDrawLayer.processOffset(HighlightingDrawLayer.java:618) at org.netbeans.editor.HighlightingDrawLayer.isActive(HighlightingDrawLayer.java:344) at org.netbeans.editor.DrawEngine.drawArea(DrawEngine.java:884) at org.netbeans.editor.DrawEngine.drawInternal(DrawEngine.java:1168) at org.netbeans.editor.DrawEngine.draw(DrawEngine.java:1074) at org.netbeans.editor.DrawEngineLineView.getModel2ViewRect(DrawEngineLineView.java:413) at org.netbeans.editor.DrawEngineLineView.modelToView(DrawEngineLineView.java:482) at org.netbeans.editor.DrawEngineLineView.getPreferredSpan(DrawEngineLineView.java:305) at org.netbeans.editor.DrawEngineLineView.minorAxisUpdateLayout(DrawEngineLineView.java:802) at org.netbeans.editor.DrawEngineLineView.updateLayout(DrawEngineLineView.java:757) at org.netbeans.lib.editor.view.GapBoxViewChildren.childrenUpdateLayout(GapBoxViewChildren.java:900) at org.netbeans.lib.editor.view.GapBoxViewChildren.childrenUpdateLayout(GapBoxViewChildren.java:905) at org.netbeans.lib.editor.view.GapBoxView.updateLayout(GapBoxView.java:756) at org.netbeans.lib.editor.view.GapBoxView.directUpdateLayout(GapBoxView.java:904) at org.netbeans.lib.editor.view.GapDocumentView.directUpdateLayout(GapDocumentView.java:187) at org.netbeans.lib.editor.view.GapBoxView.markLayoutInvalid(GapBoxView.java:891) at org.netbeans.lib.editor.view.GapBoxViewChildren.markLayoutInvalid(GapBoxViewChildren.java:859) at org.netbeans.lib.editor.view.GapBoxView.preferenceChanged(GapBoxView.java:1279) at org.netbeans.editor.DrawEngineLineView.setEstimatedSpan(DrawEngineLineView.java:184) at org.netbeans.editor.DrawEngineLineView.modelToView(DrawEngineLineView.java:454) at org.netbeans.editor.DrawEngineLineView.modelToView(DrawEngineLineView.java:441) at org.netbeans.lib.editor.view.GapBoxView.modelToView(GapBoxView.java:1507) at org.netbeans.editor.view.spi.LockView.modelToView(LockView.java:423) at javax.swing.plaf.basic.BasicTextUI$RootView.modelToView(BasicTextUI.java:1497) at javax.swing.plaf.basic.BasicTextUI.modelToView(BasicTextUI.java:1035) at org.netbeans.editor.BaseCaret.updateCaretBounds(BaseCaret.java:337) at org.netbeans.editor.BaseCaret.update(BaseCaret.java:629) at org.netbeans.editor.BaseCaret$3.run(BaseCaret.java:593) at org.netbeans.editor.Utilities.runInEventDispatchThread(Utilities.java:1088) at org.netbeans.editor.BaseCaret.dispatchUpdate(BaseCaret.java:584) at org.netbeans.editor.BaseCaret.setDot(BaseCaret.java:1042) at org.netbeans.editor.BaseCaret.setDot(BaseCaret.java:1062) at org.netbeans.editor.BaseCaret.setDot(BaseCaret.java:972) at javax.swing.text.JTextComponent.setCaretPosition(JTextComponent.java:1652) at org.netbeans.modules.form.CustomCodeView$DocumentL.contentChange(CustomCodeView.java:679) at org.netbeans.modules.form.CustomCodeView$DocumentL.removeUpdate(CustomCodeView.java:643) at org.netbeans.lib.editor.util.swing.PriorityDocumentListenerList.removeUpdate(PriorityDocumentListenerList.java:99) at javax.swing.text.AbstractDocument.fireRemoveUpdate(AbstractDocument.java:243) at org.netbeans.editor.BaseDocument.fireRemoveUpdate(BaseDocument.java:1617) at org.netbeans.editor.BaseDocument.remove(BaseDocument.java:916) at org.netbeans.modules.editor.java.DeleteToNextCamelCasePosition.moveToNewOffset(DeleteToNextCamelCasePosition.java:59) at org.netbeans.modules.editor.java.AbstractCamelCasePosition$1.run(AbstractCamelCasePosition.java:99) at org.netbeans.editor.GuardedDocument.runAtomic(GuardedDocument.java:294) at org.netbeans.modules.editor.java.AbstractCamelCasePosition.actionPerformed(AbstractCamelCasePosition.java:93) at org.netbeans.editor.BaseAction.actionPerformed(BaseAction.java:297) at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1636) at javax.swing.JComponent.processKeyBinding(JComponent.java:2849) at javax.swing.JComponent.processKeyBindings(JComponent.java:2884) at javax.swing.JComponent.processKeyEvent(JComponent.java:2812) at java.awt.Component.processEvent(Component.java:5911) at java.awt.Container.processEvent(Container.java:2023) at java.awt.Component.dispatchEventImpl(Component.java:4501) at java.awt.Container.dispatchEventImpl(Container.java:2081) at java.awt.Component.dispatchEvent(Component.java:4331) at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1848) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:704) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:969) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:841) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:668) at java.awt.Component.dispatchEventImpl(Component.java:4373) at java.awt.Container.dispatchEventImpl(Container.java:2081) at java.awt.Window.dispatchEventImpl(Window.java:2458) at java.awt.Component.dispatchEvent(Component.java:4331) [catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178) at java.awt.Dialog$1.run(Dialog.java:1046) at java.awt.Dialog$3.run(Dialog.java:1098) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Dialog.show(Dialog.java:1096) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:867) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:901) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:889) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:109) at org.openide.util.Mutex.doEventAccess(Mutex.java:1355) at org.openide.util.Mutex.readAccess(Mutex.java:268) at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:874) at java.awt.Component.show(Component.java:1447) at java.awt.Component.setVisible(Component.java:1400) at java.awt.Window.setVisible(Window.java:824) at java.awt.Dialog.setVisible(Dialog.java:986) at org.netbeans.core.windows.services.DialogDisplayerImpl$1AWTQuery.showDialog(DialogDisplayerImpl.java:232) at org.netbeans.core.windows.services.DialogDisplayerImpl.notify(DialogDisplayerImpl.java:248) at org.netbeans.core.windows.services.DialogDisplayerImpl.notify(DialogDisplayerImpl.java:146) at org.netbeans.modules.form.CodeCustomizer.show(CodeCustomizer.java:99) at org.netbeans.modules.form.CodeCustomizer.show(CodeCustomizer.java:88) at org.netbeans.modules.form.actions.CustomCodeAction.performAction(CustomCodeAction.java:55) at org.openide.util.actions.NodeAction$DelegateAction$1.run(NodeAction.java:581) at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:77) at org.openide.util.actions.NodeAction$DelegateAction.actionPerformed(NodeAction.java:577) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.AbstractButton.doClick(AbstractButton.java:357) at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1225) at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1266) at java.awt.Component.processMouseEvent(Component.java:6134) at javax.swing.JComponent.processMouseEvent(JComponent.java:3265) at java.awt.Component.processEvent(Component.java:5899) at java.awt.Container.processEvent(Container.java:2023) at java.awt.Component.dispatchEventImpl(Component.java:4501) at java.awt.Container.dispatchEventImpl(Container.java:2081) at java.awt.Component.dispatchEvent(Component.java:4331) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4301) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3965) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3895) at java.awt.Container.dispatchEventImpl(Container.java:2067) at java.awt.Window.dispatchEventImpl(Window.java:2458) at java.awt.Component.dispatchEvent(Component.java:4331) at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)