Hi there,
we recently upgraded our ArcGIS server to 10.1, and noticed that IdentifyTask function on our Silverlight application is now returning null for every query.
The function call doesn't throw any error, so I'm not sure what the issue is.
The map's spatialreference WKID used to be 2285. And now it's 102748. I'm guessing the former is industry standard, while the latter is ESRI's internal standard. But I assumed it wouldn't make any difference, given how other queries such as FeatureSet are working fine.
So any ideas what might be happening?