Hi 
, mm.. what should I do??? 
Description:
Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 11/21/2012 9:06:39 PM
Event time (UTC): 11/21/2012 8:06:39 PM
Event ID: cd614c76284a4cf6ba8df676d93ce92f
Event sequence: 263
Event occurrence: 9
Event detail code: 0
Application information:
Application domain: /LM/W3SVC/114892198/Root-1-129979191800156250
Trust level: Full
Application Virtual Path: /
Application Path: E:\siti\SiteName\
Machine name: MachineName
Process information:
Process ID: 6940
Process name: w3wp.exe
Account name: NT AUTHORITY\NETWORK SERVICE
Exception information:
Exception type: HttpException
Exception message: Unable to validate data.
Request information:
Request URL: http://www.SiteName.ext/ScriptResource.axd?d=InWx-..
Request path: /ScriptResource.axd
User host address: 66.249.66.188
User:
Is authenticated: False
Authentication Type:
Thread account name: NT AUTHORITY\NETWORK SERVICE
Thread information:
Thread ID: 7
Thread account name: NT AUTHORITY\NETWORK SERVICE
Is impersonating: False
Stack trace: at System.Web.Configuration.MachineKeySection.EncryptOrDecryptData(Boolean fEncrypt, Byte[] buf, Byte[] modifier, Int32 start, Int32 length, IVType ivType, Boolean useValidationSymAlgo, Boolean signData)
at System.Web.Configuration.MachineKeySection.EncryptOrDecryptData(Boolean fEncrypt, Byte[] buf, Byte[] modifier, Int32 start, Int32 length, IVType ivType, Boolean useValidationSymAlgo)
at System.Web.UI.Page.DecryptStringWithIV(String s, IVType ivType)
at System.Web.UI.Page.DecryptString(String s)