Hello,
I can't, for the life of me, figure out how to add the RichTextBoxAdv control into my UWP project. I have the following added as references in my project: SfRichTextBoxAdv.Universal, Syncfusion.DocIO.Universal, Syncfusion.SfRadialMenu.Universal, and Syncfusion.SfShared.Universal. My namespace: xmlns:richTextBoxAdv="using:Syncfusion.UI.Xaml.RichTextBoxAdv" and my code is simply:
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<richTextBoxAdv:SfRichTextBoxAdv x:Name="richTextBoxAdv" ManipulationMode="All" />
</Grid>
I get the following error in my xaml view, and every time I refresh the view, I still get this error message:

What am I missing? I've downloaded Essential Studio Version 13.2.0.39.
I've tried running the samples, and loaded DocumentEditor.xaml from the RTE folder in the SampleBrowser_2015 solution, but still encounter the error message above. Additionally, the code won't build for the SampleBrowser_2015 solution.
Any insight will be very much appreciated.