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Sys.WebForms.PageRequest.... Error

HI i am using asp.net ands ajax code to allow submit to DB. it seemed to be working fine but now i have started to get this error when i  click DONE button to save the text to DB
Sys.webforms.PageRequestManagerServerErrorexpection Unknown error occured when processing the request from server. the status code returned from the server was: 500

I am using the FCKEDitor component as well.
1 Solution
Sachintana DissanayakeSenior Web DeveloperCommented:
Please add the following page directive to the page.

This happens due to AJAX timer bug according to some forums.

You can avoid the bug by adding to Session_Start...

void Session_Start(object sender, EventArgs e) 
    string sessionId = Session.SessionID;

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Mayank_AgarwalAuthor Commented:
Thanks for the solution.

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