# Tab Strip Error - Error Setting selectedTab Property **URL:** \ **Category:** Ignition\ **Tags:** ignition81, vision\ **Created:** [November 1, 2023, 3:42pm UTC](https://forum.inductiveautomation.com/t/tab-strip-error-error-setting-selectedtab-property/81311 "2023-11-01T15:42:09Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![amarks](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/amarks/32/45610_2.png) [@amarks](https://forum.inductiveautomation.com/u/amarks)\ **Post date:** [November 1, 2023, 3:42pm UTC](https://forum.inductiveautomation.com/t/tab-strip-error-error-setting-selectedtab-property/81311/1 "2023-11-01T15:42:09Z")
I'm getting an error that's causing issues with the startup of my navigation setup. This error does not occur when launching a client from the designer, only from the client launcher. It also does not happen _every time_ I try to launch from the client launcher (but it does happen pretty frequently) with no changes to the project. There are some dependent, subsequent bindings. Could that be causing the issue? How can I make sure all bindings are ready to go? ```auto 10:26:38.055 [AWT-EventQueue-0] WARN Vision.Binding.SimpleBoundTagAdapter - Error setting property to 'Phase_2B/01-Headworks/Headworks' for binding on DockedNav.Root Container.Tier2_HEAD.selectedTab java.lang.Exception: Error setting property to 'Phase_2B/01-Headworks/Headworks' for binding on DockedNav.Root Container.Tier2_HEAD.selectedTab at com.inductiveautomation.factorypmi.application.binding.AbstractPropertyAdapter.updateTarget(AbstractPropertyAdapter.java:333) at com.inductiveautomation.factorypmi.application.binding.SimpleBoundTagAdapter.updateTarget(SimpleBoundTagAdapter.java:553) at com.inductiveautomation.factorypmi.application.binding.AbstractPropertyAdapter.updateValue(AbstractPropertyAdapter.java:271) at com.inductiveautomation.factorypmi.application.binding.SimpleBoundTagAdapter.notifyTagChanged(SimpleBoundTagAdapter.java:518) at com.inductiveautomation.factorypmi.application.binding.SimpleBoundTagAdapter.tagChanged(SimpleBoundTagAdapter.java:506) at com.inductiveautomation.ignition.client.sqltags.impl.ChangeNotifier.run(ChangeNotifier.java:32) at com.inductiveautomation.ignition.client.sqltags.impl.ChangeNotifier.start(ChangeNotifier.java:45) at com.inductiveautomation.factorypmi.application.sqltags.ProjectTagSubscriptionManager.handleTagChanged(ProjectTagSubscriptionManager.java:165) at com.inductiveautomation.factorypmi.application.sqltags.ProjectTagSubscriptionManager.tagChanged(ProjectTagSubscriptionManager.java:151) at com.inductiveautomation.factorypmi.application.sqltags.AbstractClientTag.fireTagChange(AbstractClientTag.java:454) at com.inductiveautomation.factorypmi.application.sqltags.AbstractClientTag.setCurrentValue(AbstractClientTag.java:227) at com.inductiveautomation.factorypmi.application.sqltags.system.client.AbstractClientSystemTag._setValue(AbstractClientSystemTag.java:36) at com.inductiveautomation.factorypmi.application.sqltags.system.client.CurrentWindowTag.update(CurrentWindowTag.java:51) at com.inductiveautomation.factorypmi.application.sqltags.system.client.CurrentWindowTag.windowOpened(CurrentWindowTag.java:73) at com.inductiveautomation.factorypmi.application.VisionDesktop.fireWindowEvent(VisionDesktop.java:425) at com.inductiveautomation.factorypmi.application.VisionDesktop$InternalFrameEventRelay.internalFrameOpened(VisionDesktop.java:626) at java.desktop/javax.swing.JInternalFrame.fireInternalFrameEvent(Unknown Source) at java.desktop/javax.swing.JInternalFrame.show(Unknown Source) at java.desktop/java.awt.Component.show(Unknown Source) at java.desktop/java.awt.Component.setVisible(Unknown Source) at java.desktop/javax.swing.JComponent.setVisible(Unknown Source) at com.inductiveautomation.factorypmi.application.VisionDesktop$RuntimeWindowOpener.openWindow(VisionDesktop.java:557) at com.inductiveautomation.factorypmi.application.VisionDesktop.openWindow(VisionDesktop.java:192) at com.inductiveautomation.factorypmi.application.VisionDesktop.openWindow(VisionDesktop.java:184) at com.inductiveautomation.factorypmi.application.FPMIApp.startup(FPMIApp.java:523) at com.inductiveautomation.factorypmi.application.runtime.ClientPanel.lambda$startupApp$8(ClientPanel.java:912) at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.EventQueue$4.run(Unknown Source) at java.desktop/java.awt.EventQueue$4.run(Unknown Source) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.desktop/java.awt.EventDispatchThread.run(Unknown Source) Caused by: java.lang.NullPointerException: null at com.inductiveautomation.factorypmi.application.components.tabstrip.PMITabStrip.tabExistsAndIsEnabled(PMITabStrip.java:454) at com.inductiveautomation.factorypmi.application.components.tabstrip.PMITabStrip.setSelectedTab(PMITabStrip.java:480) at jdk.internal.reflect.GeneratedMethodAccessor129.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.base/java.lang.reflect.Method.invoke(Unknown Source) at com.inductiveautomation.factorypmi.application.binding.AbstractPropertyAdapter.updateTarget(AbstractPropertyAdapter.java:326) ... 38 common frames omitted 10:26:38.685 [AWT-EventQueue-0] WARN Vision.Binding.CellUpdateAdapter - Error setting property to 'Dataset [13R ? 24C]' for binding on DockedNav.Root Container.Tier2_HEAD.tabData java.lang.Exception: Error setting property to 'Dataset [13R ? 24C]' for binding on DockedNav.Root Container.Tier2_HEAD.tabData at com.inductiveautomation.factorypmi.application.binding.AbstractPropertyAdapter.updateTarget(AbstractPropertyAdapter.java:333) at com.inductiveautomation.factorypmi.application.binding.CellUpdateAdapter.updateTarget(CellUpdateAdapter.java:214) at com.inductiveautomation.factorypmi.application.binding.AbstractPropertyAdapter.updateValue(AbstractPropertyAdapter.java:271) at com.inductiveautomation.factorypmi.application.binding.CellUpdateAdapter.eval(CellUpdateAdapter.java:185) at com.inductiveautomation.factorypmi.application.binding.CellUpdateAdapter.eval(CellUpdateAdapter.java:121) at com.inductiveautomation.factorypmi.application.binding.CellUpdateAdapter.lambda$new$0(CellUpdateAdapter.java:208) at com.inductiveautomation.ignition.client.util.EDTUtil$ProcessQueue.run(EDTUtil.java:126) at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.EventQueue$4.run(Unknown Source) at java.desktop/java.awt.EventQueue$4.run(Unknown Source) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.desktop/java.awt.EventDispatchThread.run(Unknown Source) Caused by: java.lang.NullPointerException: null at com.inductiveautomation.factorypmi.application.components.tabstrip.PMITabStrip.tabExistsAndIsEnabled(PMITabStrip.java:454) at com.inductiveautomation.factorypmi.application.components.tabstrip.PMITabStrip.setSelectedTab(PMITabStrip.java:480) at com.inductiveautomation.factorypmi.application.components.tabstrip.PMITabStrip.setTabData(PMITabStrip.java:544) at jdk.internal.reflect.GeneratedMethodAccessor131.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.base/java.lang.reflect.Method.invoke(Unknown Source) at com.inductiveautomation.factorypmi.application.binding.AbstractPropertyAdapter.updateTarget(AbstractPropertyAdapter.java:326) ... 19 common frames omitted ``` selectedTab is bound to the `currentWindow` tag ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 1, 2023, 3:45pm UTC](https://forum.inductiveautomation.com/t/tab-strip-error-error-setting-selectedtab-property/81311/2 "2023-11-01T15:45:22Z")
You are using cell update bindings. Depending on the source, these can stick nulls into your data set (particularly for tag values). This is screwing up the tab strip. Consider not using cell update bindings. (I avoid them like the plague.) ---
**Author:** ![amarks](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/amarks/32/45610_2.png) [@amarks](https://forum.inductiveautomation.com/u/amarks)\ **Post date:** [November 1, 2023, 3:48pm UTC](https://forum.inductiveautomation.com/t/tab-strip-error-error-setting-selectedtab-property/81311/3 "2023-11-01T15:48:29Z")
Ugh. I hate scripting with datasets... guess I better get better at it... It works just fine outside of startup ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 1, 2023, 3:51pm UTC](https://forum.inductiveautomation.com/t/tab-strip-error-error-setting-selectedtab-property/81311/4 "2023-11-01T15:51:54Z")
If you use my [Integration Toolkit](https://forum.inductiveautomation.com/t/automation-professionals-integration-toolkit-module/74934/82) module, you can construct datasets with expressions. (: ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 1, 2023, 3:53pm UTC](https://forum.inductiveautomation.com/t/tab-strip-error-error-setting-selectedtab-property/81311/5 "2023-11-01T15:53:39Z")
> [@amarks](#): > > It works just fine outside of startup That's because tag bindings start up with nulls. You have to handle that, and handling that is near-impossible with cell update bindings. ---
**Author:** ![amarks](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/amarks/32/45610_2.png) [@amarks](https://forum.inductiveautomation.com/u/amarks)\ **Post date:** [November 1, 2023, 3:59pm UTC](https://forum.inductiveautomation.com/t/tab-strip-error-error-setting-selectedtab-property/81311/6 "2023-11-01T15:59:23Z")
So either learn a new thing or learn a new thing 🙃 lol I don't _think_ (I could be wrong) the functions in the module will be particularly useful for my use case. Scripting it is... ---
**Author:** ![amarks](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/amarks/32/45610_2.png) [@amarks](https://forum.inductiveautomation.com/u/amarks)\ **Post date:** [November 1, 2023, 6:36pm UTC](https://forum.inductiveautomation.com/t/tab-strip-error-error-setting-selectedtab-property/81311/7 "2023-11-01T18:36:34Z")
> [@pturmel](#): > > Consider not using cell update bindings. (I avoid them like the plague.) Seems like they do ok with bindings to bool values. Anything more complex and it starts causing issues. I figured out a way around this specific issue while still using a couple cell update bindings on the enable prop for the rows. ---
**Author:** ![lrose](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lrose/32/62724_2.png) [@lrose](https://forum.inductiveautomation.com/u/lrose)\ **Post date:** [November 2, 2023, 10:40am UTC](https://forum.inductiveautomation.com/t/tab-strip-error-error-setting-selectedtab-property/81311/8 "2023-11-02T10:40:15Z")
> [@amarks](#): > > Seems like they do ok with bindings to bool values. Because null is a falsy value. The bindings are undoubtedly firing more than once but you’re handling the null value as a false value. > [@amarks](#): > > I don't _think_ (I could be wrong) the functions in the module will be particularly useful for my use case. I think you would be surprised. It’s free so might give it a try, the learning curve isn’t steep, and the performance is better. ---
**Author:** ![bkarabinchak.psi](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/bkarabinchak.psi/32/83567_2.png) [@bkarabinchak.psi](https://forum.inductiveautomation.com/u/bkarabinchak.psi)\ **Post date:** [November 2, 2023, 11:35am UTC](https://forum.inductiveautomation.com/t/tab-strip-error-error-setting-selectedtab-property/81311/9 "2023-11-02T11:35:25Z")
Also worth it in general, it makes dataset manipulation much easier and manageable. I have not touched the newer expressions yet, but I still use `view()` heavily everywhere - makes thing a breeze for filtering or putting a column value through a function.