Use different versions of the RadEditorPlaceholderControl? SOLUTION
Due to legacy issues, you might prefer one or more of the applications to stay with the previous versions of RadEditorPlaceholderControl. As the control searches its RadControls folder by using a virtual path, you can do the following:
Of course, the location of the RadControls folder could be changed by using the RadControlsDir property, but then you will need to set this property for every instance of the RadEditorPlaceholderControl.