Question : SQL Server 2005 Reporting Services - ReportViewer Webform Issue - Error: 'RSClientController' is undefined

After building a report with the business intelligence studio, and trying to load it into the Microsoft Report Viewer in a VB.NET application, the javascript is blowing up with the following types of errors:

Error: 'RSClientController' is undefined
Error: 'document.getElementByID(...).ClientController' is null or not an object

Report viewer form is then empty. I have searched all the web, found some potential answers, tried all of them, to no avail. This is a critical error and my client is not pleased with the amount of time it is taking to resolve this issue. Microsoft has been no help, and I am stuck after trying all found suggestions.

Report works fine in Business Intelligence Development Studio, as well as from the Report Server itself, just not in the .NET code on the web server.

If you respond, I can tick-off all the potential solutions I have already tried. Thank you. This is a crtitical issue.

Answer : SQL Server 2005 Reporting Services - ReportViewer Webform Issue - Error: 'RSClientController' is undefined

Thanks to JuckMan and sm394, but I found the issue (finally) on my own. After several more hours of research, I discovered that this control from Microsoft requires a FULL postback to work properly. They are 'working' on a version that will allow for partial postbacks (AJAX).

I had this form embedded in an Ajax form, and hence, my problem. It is now resolved.

Thanks again.