Viewing certain template types generates a warning message and closes the Preview window.
There are certain template types that you cannot preview since they are applied to content source that does not yet exist. For example, XSL templates that are applied to a mobile application. In these cases, the preview displays a warning message in the preview window and the preview is disabled. Previewing some of these types of templates closes the browser widget in Eclipse. In these cases you must close and restart the Template Editor.
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