I am aware of a similar problem which is logged in the following PITS item: http://www.telerik.com/support/pits.aspx#/public/aspnet-ajax/4889
FIX RadEditor is unusable when inside a control containter of RadWindow
If you use RadWindow to display a RadEditor instance the buttons in RadEditor do not work (rendering it unusable). The issue only arises when RadWindow is used as a control containter (i.e. the RadEditor is within the <ContentTemplate> of RadWindow).
To fix the problem you must execute the onParentNodeChanged() method of the RadEditor object after it is shown.
Here is the sample project: http://www.telerik.com/ClientsFiles/291003_UnusableEditorFIX.zip
My suggestion is to fire the editor.onParentNodeChanged()
method when loading the dialog.
If you still experience the problem, please, isolate it in a simple working project and send it for examination.
the Telerik team
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