Cannot load a tiled map service

I am using Flex Builder 4.6 + flex viewer 3.0 + agslib-3.1.swc.

When I use the config.xml file (Attachment 22064) to load the included tiled map service, it is okay. But, when I replace the layer in the basemaps by using the below tiled map service on my own server:

<layer label="Demographics" type="tiled" visible="true" alpha="1.0"
url="http://141.117.248.106:6080/arcgis/rest/services/IceWaterLand/MapServer">
</layer>

I always got an error as shown below:

Attachment 22063

I got stuck for some time. Any of your comments and suggestions are highly expected! Thanks!

Attached Thumbnails

 

Attached Files

• config.zip‎ (1.2 KB)