RibbonView in 2013_2_0729 hotfix

[Dodd]

Hello, I downloaded 2013_2_0729 hotfix and RadRibbionView doesn't work as before.
I'm using the below code (called from the OnContentRendered event of RadRibbonWindow).
_mainRibbon is a RadRibbonView instance and each tab in  _mainRibbon is dynamically created.
This code worked fine in former versions, but after applying 2013_2_0729 hotfix, NullExceptionError occurrs in _mainRibbon.Visibility = Visibility.Visible;. Can this be fixed?

        private void createFeatures()
        {
            List<IPluginFactory> featureFactories = PluginManager.Instance.GetFactories(typeof(IFeatureFactory));
            foreach (IPluginFactory factory in featureFactories)
            {
                // Providing callback (delegate) to create any number of FeatureWindows from the feature
                IFeature feature = (factory as IFeatureFactory).Create(_mainRibbon, createFeatureWindow, create3DWindow);
            }

            _mainRibbon.SelectedIndex = 0;
            _mainRibbon.Visibility = Visibility.Visible;
        }

[Tina Stancheva]

Hello Dodd,

Unfortunately from the provided information we cannot tell for sure what might be causing this exception. Can you please elaborate a bit more on your scenario and its implementation. And if possible, can you please try to isolate that case in a sample solution? Then we will be able to try and reproduce it locally and further investigate the cause.

Thank you in advance for your cooperation.

Regards,
Tina Stancheva
Telerik