Thanks, no error message now but still there other problem, the plugin not saving my selection for devices switch to themes! when i click “save changes” button after i select themes for iphone, Tablet, Other Mobile Devices…; it reload the page and showing selection feilds “Please Select” instead of showing for example theme “Twenty Ten”!!
Because i am trying to swwitching devices to theme “Twenty Ten” from the default one “Mesmerize”, So can you help fixing the issue?