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Tooltip timeout

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This is a migrated thread and some comments may be shown as answers.
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Mattias asked on 13 Nov 2008, 04:59 PM
My tooltip works fine until I leave my computer for say 10 minutes.
When I come back and hoover an item to see the tooltip it just loads and loads unil it fails completely.
I really don't know where or what to look for!

I've got this from event viewer:
Event Type: Warning 
Event Source:   ASP.NET 2.0.50727.0 
Event Category: Web Event  
Event ID:   1309 
Date:       2008-11-13 
Time:       17:40:48 
User:       N/A 
Computer:   CT2656 
Event code: 3005  
Event message: An unhandled exception has occurred.  
Event time: 11/13/2008 5:40:48 PM  
Event time (UTC): 11/13/2008 4:40:48 PM  
Event ID: acbe568a39c74415a2040543c5ebdae3  
Event sequence: 8  
Event occurrence: 1  
Event detail code: 0  
Application information:  
    Application domain: /LM/W3SVC/24966/Root-1-128710678927637500  
    Trust level: Full  
    Application Virtual Path: /  
    Application Path: C:\Inetpub\vhosts\site1\httpdocs\  
    Machine name: CT2656  
Process information:  
    Process ID: 79348  
    Process name: w3wp.exe  
    Account name: CT2656\IWAM_plesk(default)  
Exception information:  
    Exception type: CryptographicException  
    Exception message: Utfyllnaden är ogiltig och går inte att ta bort. (translated: the padding is not valid and cannot be removed) 
Request information:  
    Request URL:  
    Request path: /WebResource.axd  
    User host address:  
    Is authenticated: False  
    Authentication Type:   
    Thread account name: CT2656\IWAM_plesk(default)  
Thread information:  
    Thread ID: 6  
    Thread account name: CT2656\IWAM_plesk(default)  
    Is impersonating: False  
    Stack trace:    at System.Security.Cryptography.RijndaelManagedTransform.DecryptData(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount, Byte[]& outputBuffer, Int32 outputOffset, PaddingMode paddingMode, Boolean fLast) 
   at System.Security.Cryptography.RijndaelManagedTransform.TransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount) 
   at System.Security.Cryptography.CryptoStream.FlushFinalBlock() 
   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.Handlers.AssemblyResourceLoader.System.Web.IHttpHandler.ProcessRequest(HttpContext context) 
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() 
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) 
Custom event details:  
For more information, see Help and Support Center at 

1 Answer, 1 is accepted

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Svetlina Anati
Telerik team
answered on 17 Nov 2008, 02:42 PM
Hello Mattias,

I am not quite sure what is the exact problem on your side and since I do not have your code I can only assume what might cause the issue. I assume that you are using a RadToolTipManager and you are using the LoadOnDemand functionality to load content by using AJAX. If so, I think that the issue could be a known issue with the MS AJAX framework which concerns the session. The only workaround we can suggest in this case at the moment is not to let the session expire - one possible way to achieve this can be found here.

In case this is not the case on your side, please prepare a sample, fully runnable demo project, open a new support ticket and send it to me along with detailed explanation.

Kind regards,
the Telerik team

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Svetlina Anati
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