Pinta dev. 1.7.0.140 on Windows 7.
1. New image.
2. From Images pad click on X to close an image.
3. Click somewhere in Images pad and Pinta crashes with error:
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System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at Pinta.Gui.Widgets.OpenImagesListWidget.HandleTreeButtonPressEvent(Object o, ButtonPressEventArgs args) in c:\GitRepos\Pinta\Pinta.Gui.Widgets\Widgets\OpenImages\OpenImagesListWidget.cs:line 146
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Reflection.RuntimeMethodInfo.UnsafeInvoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Delegate.DynamicInvokeImpl(Object[] args)
at GLib.Signal.ClosureInvokedCB(Object o, ClosureInvokedArgs args)
at GLib.SignalClosure.Invoke(ClosureInvokedArgs args)
at GLib.SignalClosure.MarshalCallback(IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invocation_hint, IntPtr marshal_data)
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Downloaded the zip of 1.7.0.140 on Windows XP
was able to replicate this error
the easiest way to do it was to double click on X to close an image (but clicking elsewhere on the palette didn't always trigger it)