Hi, i Start a new ATVO Theme and suddenly Theme Editor, when I exit and save , crash ! i can open again my theme but every new modification is not include in the export !

The bug report:

Error: 12/27/2020 7:58:47 PM (UTC)
ATVO version: 1.29.13.0
Themes SDK version: 1.19.0.0
Theme version: none

Unhandled exception
System.NullReferenceException: Object reference not set to an instance of an object.
  at ATVO.ThemeEditor.Utils.TreeViewUtils.ExpandAndContinue(TreeViewItem root, Object item, Action`1 action) in D:\Users\Nick\Documents\Programming\ATVO\Appgineer.in-TV-Overlay-for-iRacing\ATVO.ThemeEditor\Utils\TreeViewUtils.cs:line 0
  at System.Windows.Controls.ItemContainerGenerator.SetStatus(GeneratorStatus value)
  at System.Windows.Controls.ItemContainerGenerator.System.Windows.Controls.Primitives.IItemContainerGenerator.StartAt(GeneratorPosition position, GeneratorDirection direction, Boolean allowStartAtRealizedItem)
  at System.Windows.Controls.Panel.GenerateChildren()
  at System.Windows.Controls.Panel.EnsureGenerator()
  at System.Windows.Controls.Panel.get_InternalChildren()
  at System.Windows.Controls.StackPanel.StackMeasureHelper(IStackMeasure measureElement, IStackMeasureScrollData scrollData, Size constraint)
  at System.Windows.Controls.StackPanel.MeasureOverride(Size constraint)
  at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
  at System.Windows.UIElement.Measure(Size availableSize)
  at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
  at System.Windows.Controls.ItemsPresenter.MeasureOverride(Size constraint)
  at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
  at System.Windows.UIElement.Measure(Size availableSize)
  at System.Windows.Controls.StackPanel.StackMeasureHelper(IStackMeasure measureElement, IStackMeasureScrollData scrollData, Size constraint)
  at System.Windows.Controls.StackPanel.MeasureOverride(Size constraint)
  at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
  at System.Windows.UIElement.Measure(Size availableSize)
  at System.Windows.Controls.Control.MeasureOverride(Size constraint)
  at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
  at System.Windows.UIElement.Measure(Size availableSize)
  at System.Windows.ContextLayoutManager.UpdateLayout()
  at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
  at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
  at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
  at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
  at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
  at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

Any idea ?

I install beta and now it is ok !

I was in stable.

Hi, I change the name of the post because the problem comes again.

Tonight I can't make evolution on my theme, everyting I do on THEME EDITOR appears and be save. But if I do export, It stay at a past edition and every new change isn't be present.

I try different way, reboot computer, save theme as .... sometimes new are save ONCE but no more .... I try to pass from STABLE to BETA ... but modification are just visible in THEME EDITOR but not exported to ATVO.

I take a look with notepad++ and modifications appears in my file overlay.atvotheme
Is there a place where we can erase some tempory files ?

Nevermind - Dropbox issue, not ATVO related. Removed my message.

Just for information, I install THEME EDITOR on an other computer, I can edit my theme and do evolution. So it is not a problem from files.