Hi, the following NOAA map service for their seamless nautical charts will not load in AGX. (I'm using the non-REST URL in AGX.)
http://seamlessrnc.nauticalcharts.noaa.gov/arcgis/rest/services/RNC/NOAA_RNC/MapServer
If you try to add RNC/NOAA_RNC via Add Content/GIS Services, an error message is displayed:

I don't think there is anything inherently wrong with the service, since I can load it in our Silverlight viewer, and I can add it to a map in ArcGIS Online. I don't see any HTTP errors when looking at Fiddler. Any ideas what could be wrong or how to debug this?
Thanks,
Mike