Errors occurred after web-site deployed, but it's run well at localhost

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C#

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i deployed my web-site, which have Registration and after registration succeeded redirect to ( Congratulations.aspx ) Page with welcome message.

All the registration page in UpdatePanel which means all errors occurred no postbacks happening .

Every thing is OK on localhost, but after deployed it on (GoDaddy Server) every thing becomes not OK.

issue is after registration ( All data OK ) one or two times succeeded, but many-times the browser redirect to (http://www.iteshare.com/Errors/404.aspx?aspxerrorpath=/Membership/Registration.aspx )

YOU CAN REGISTER AND SEE THE PROBLEM PLEASE VISIT ( http://www.iteshare.com/Home.aspx )