crystal on web forms

Hey,
i'm trying to drop a CrystalReportViewer control onto a web form.
I am getting the following error:

Failed to create designer
'CrystalDecisions.VSDesigner.WebReportViewerDesigner, CrystalDecisions.VSDesigner, Version=9.2.3300.0, Culture=neutral, PublicKeyToken=692fbea5521e1304'

Am i doing anything wrong, or is it VB.NET or Crystal?

Thanks
[400 byte] By [Nasty2] at [2007-11-19 7:24:40]