Hi devs, I was playing with the office preview script service when I discovered that $services throws ScriptServiceNotFoundException when there's no script service registered for the specified hint, e.g. $services.foo . I was expecting $services to return null when it fails to locate a service. I even wrote: #if($services.officepreview) {{html}} $services.officepreview.preview(...) {{/html}} #else {{error}}The office preview component has not been installed.{{/error}} #end What do you think it's best: to throw ScriptServiceNotFoundException or to return null? Anyway, I think there should be a method to check if a script service is available ( http://svn.xwiki.org/svnroot/xwiki/platform/core/trunk/xwiki-script/src/mai… ). WDYT? Thanks, Marius