From: walter on
Does anyone know why I have problem with ReportViewerWebPart in the
Sharepoint Designer. All ReportviewerWebPart display the following Error:
Error Rendering Control -ReportViewerWebPart
Missing required page header. I have installed the Reporting Services Addins
for Sharepoint. When I design the Webpart in the Explorer directly, so it
works fine.

Thanks a lot for your help!