Error: Curves are not supported
**This issue has been resolved in ArcGIS Server version 9.3.**
When executing the Identify tool or a task against features that contain curved segments in Web applications built with ArcGIS Server for the Microsoft .Net Framework, the following error message may occur:
"Curves are not supported"
This is a known limit when using the .NET Web ADF at ArcGIS Server version 9.2.
Solution or Workaround
With ArcGIS Server version 9.2, add a code piece to the application's code as shown in ESRI Knowledge Base article 33331.
ESRI Global Account login is required to view the article within the above link.