IIS ( .NET errors)

We found repeated error in application logs.Please suggest on the same.

Event Type:      Warning
Event Source:      ASP.NET 2.0.50727.0
Event Category:      Web Event
Event ID:      1309
Date:            9/28/2013
Time:            12:55:30 PM
User:            N/A
Computer:      Servername
Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 9/28/2013 12:55:30 PM
Event time (UTC): 9/28/2013 4:55:30 PM
Event ID: fb25f0a78e5a4b6ca7ddb200b6d56dd5
Event sequence: 594
Event occurrence: 1
Event detail code: 0
Application information:
    Application domain: /LM/W3SVC/1448835891/Root-1-130248216732012533
    Trust level: Full
    Application Virtual Path: /
    Application Path: D:\Content\
    Machine name: servername
Process information:
    Process ID: 8972
    Process name: w3wp.exe
Exception information:
    Exception type: Exception
    Exception message: Report to be displayed was not specified.
Request information:
    Request URL: http:/XXX.com/XXX/XXXViewer.aspx 
    Request path: /XXX/XXX/XXXViewer.aspx
    User host address: xx.xx.xx.xx
    User: PMDUsers
    Is authenticated: True
    Authentication Type: Forms
    Thread account name: NT AUTHORITY\NETWORK SERVICE
Thread information:
    Thread ID: 1
    Thread account name: NT AUTHORITY\NETWORK SERVICE
    Is impersonating: False
    Stack trace:    at Dashboard.UI.PMD.PMDBasePage.Page_Load(Object sender, EventArgs e)
   at System.Web.UI.Control.OnLoad(EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Custom event details:

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
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Emmanuel AdebayoGlobal Windows Infrastructure Engineer - ConsultantCommented:
What version of Windows OS are you running? Is your Windows security patches up to date?
Did you perform any update recently?

Did you change anything in your application code recently?


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kbjijoAuthor Commented:
I've requested that this question be deleted for the following reason:

no answer as well as abandend
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