ArcGIS10.1 Servercontext is deprecated. But deserializeArcObject method is asking for ServerContext. Is AOSerializerUtil is replacement for AGSLocalUtil in ArcGIS10.1
At 10.1, you can no longer use ArcObjects remotely (via DCOM); this way of interacting with ArcGIS for Server is no longer supported. If you are using GISServerConnection in the Server library or AGSServerConnection in the GISClient library in your code, these need to be removed if you are working with ArcGIS 10.1 for Server.
