If you have upgraded your ArcGIS Server to 10.1 or higher, you will need to make a small change to each map service listed in your mapservices.config file. You will need to add
version=”10.3” for each map service, do not capitalize the v.
This change will allow the framework to recognize map service that 10.3 and below.
Example
<mapService name="gev-tiled" mapServiceType="Tiled" displayName="Streets" version="10.3" allowQuery="true"
allowView="false" url="http://tlbstws3.dot.state.fl.us/arcgis/rest/services/GEV_BOUNDARIES_CMS/MapServer"
loadCodes="false" />