Sys.WebForms.PageRequestManagerServerErrorException...

Problem

You receive this error message when attempting to view a page in your application:

Sys.WebForms.PageRequestManagerServerErrorException:
An unknown error occurred while processing the request on the server.
The status code returned from the server was: 404 ...

This error occurs when the table name has foreign characters. Then clicking any button might cause a javascript error.

Solution

To resolve this problem, go to the application generation option, General Application Options->Web Page Options->Page Controls->Smooth panel update to turn off smooth panel update.