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AnswerRe: How to retrieve default WSS Header and menu Pin
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QuestionSitecollection location in server Pin
nainakarri27-Mar-12 1:57
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QuestionDVWP Wrap Column Headings Pin
svaa21-Mar-12 9:07
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QuestionSharepoint 2007 workflow task locked issue Pin
dinesh8820-Mar-12 20:11
Memberdinesh8820-Mar-12 20:11 
Hi,

whenever I try to approve some task, it gives me the below error on the sharepoint UI
"this task is currently locked by another workflow and cannot be edited"

the status shows "completed" and we cannot proceed further. please help.

when i searched for the error in ULs logs, it shos the following:

Quote:
03/21/2012 10:32:02.56 w3wp.exe (0x1BF8) 0x1AA4 Windows SharePoint Services Workflow Infrastructure 936l High Engine RunWorkflow: System.Workflow.Activities.EventDeliveryFailedException: Event "OnWorkflowItemChanged" on interface type "Microsoft.SharePoint.Workflow.ISharePointService" for instance id "41c930d8-9629-47ef-99fb-5d74ce57ff7c" cannot be delivered. ---> System.ArgumentNullException: Buffer cannot be null. Parameter name: buffer at System.IO.MemoryStream..ctor(Byte[] buffer, Boolean writable) at Microsoft.SharePoint.Workflow.SPWinOePersistenceService.LoadWorkflowInstanceState(Guid instanceId) at System.Workflow.Runtime.WorkflowRuntime.InitializeExecutor(Guid instanceId, CreationContext context, WorkflowExecutor executor, WorkflowInstance workflowInstance) at System.Workflow.Runtime.WorkflowRuntime.Load(Guid key, CreationContext context, WorkflowInstance workflowInstance)...


03/21/2012 10:32:02.56* w3wp.exe (0x1BF8) 0x1AA4 Windows SharePoint Services Workflow Infrastructure 936l High ... at System.Workflow.Runtime.WorkflowRuntime.GetWorkflow(Guid instanceId) at System.Workflow.Activities.WorkflowMessageEventHandler.EventHandler(Object sender, ExternalDataEventArgs eventArgs) --- End of inner exception stack trace --- at System.Workflow.Activities.WorkflowMessageEventHandler.EventHandler(Object sender, ExternalDataEventArgs eventArgs) at Microsoft.SharePoint.Workflow.SPWinOEWSSService.RaiseEvent(SPWinOeWorkflow workflow, SPWorkflowEvent workflowEvent, Object workItem, IPendingWork workHandler) at Microsoft.SharePoint.Workflow.SPWinOeHostServices.Send(SPWinOeWorkflow winoeworkflow, SPWorkflowEvent e) at Microsoft.SharePoint.Workflow.SPWinOeEngine.RunWorkflow(Guid trackingId, SPWorkflowHostService host, SPWorkflow workflow, Collection`1 events, Ti...

03/21/2012 10:32:02.56* w3wp.exe (0x1BF8) 0x1AA4 Windows SharePoint Services Workflow Infrastructure 936l High ...meSpan timeOut)

AnswerRe: Sharepoint 2007 workflow task locked issue Pin
.Net Jim17-May-12 15:17
Member.Net Jim17-May-12 15:17 
Questionsharepoint(crawling of data) Pin
swapniljadhav0018-Mar-12 22:36
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AnswerRe: sharepoint(crawling of data) Pin
Christopher Stratmann9-Mar-12 3:04
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AnswerRe: sharepoint(crawling of data) Pin
_Kalashnikov24-Apr-12 17:29
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QuestionInfoPath Form - Can you promote fields to Multiple sharepoint lists Pin
lilbiggy8-Mar-12 10:14
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SuggestionRe: InfoPath Form - Can you promote fields to Multiple sharepoint lists Pin
Christopher Stratmann9-Mar-12 3:02
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GeneralRe: InfoPath Form - Can you promote fields to Multiple sharepoint lists Pin
lilbiggy9-Mar-12 9:28
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QuestionData Veiw Web Part Shows Wrong Group Count - SharePoint 2010 Pin
svaa8-Mar-12 6:24
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AnswerRe: Data Veiw Web Part Shows Wrong Group Count - SharePoint 2010 Pin
svaa12-Mar-12 10:00
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QuestionSharepoint license details Pin
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AnswerRe: Sharepoint license details Pin
Christopher Stratmann6-Mar-12 5:06
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AnswerRe: Sharepoint license details Pin
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GeneralRe: Sharepoint license details Pin
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GeneralRe: Sharepoint license details Pin
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GeneralRe: Sharepoint license details Pin
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Questiondefault.aspx in sitecollection Pin
nainakarri5-Mar-12 1:29
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AnswerRe: default.aspx in sitecollection Pin
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