using latest version silverlight api and arcgis server 9.3.1

[MannusEtten]

i have a silverlight project with one mapcontrol and one dynamicmapservicelayer.

the url of the layer pointed to a ArcGIS Server 10 mapservice, no problem.
when I change the url to a ArcGIS Server 9.3.1 mapservice no map is displayed.

what did i wrong or is this not supported? in that case, what happened with the rest interface because ESRI introduced again a backward-compatibility issue in this case...

[dotMorten_esri]

Could just as well be an issue with your server.
Please read http://blogs.esri.com/Dev/blogs/silverlightwpf/archive/2009/08/24/Troubleshooting-blank-layers.aspx

[MannusEtten]

after using firebug to see what happen I saw that there was a cross-domain problem... I added the clientaccesspolicy.xml and problem solved. Thanks for sending the link to the blog!