SSRSViewer error when changing parameter value

(useProxy = true) report withou prameters works ok. Reports with default parameters works first time.

After changing any parameter value and clicking show report button receives message:

Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled. Details: Unknown token: '0'.

Hi @villar,

It looks that the combination of report data and parameter breaks the Radzen proxy code. Could you send us the report definition and DB schema (we don’t need the actual data - just table definitions) at This will allow us to troubleshoot.

Best regards,

I have sent DB schema, rdl’s, Radzen generated project and credentials for accessing SSRS test server though e-mail.

Hi @villar,

We were able to reproduce and fix the problem. The fix will be part of our next release (before the end of the week).

Best Regards,

Good news. Long live for Radzen and team!