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    Nintex Knowledge Base

    Error "Unknown server tag 'SharePoint:ClusteredDirectionalSeparatorArrow'" Accessing Scheduled Workflow

    Summary
    When accessing a scheduled workflow, the following error might occur: Application error when access /_layouts/15/NintexWorkflow/WorkflowScheduleList.aspx, Error=Unknown server tag 'SharePoint:ClusteredDirectionalSeparatorArrow'.

    Solution
    1. Navigate to C:\ProgramFiles\CommonFiles\MicrosoftShared\WebServerExtensions\15\template\layouts\NINTEXWORKFLOW
    2. Locate the 'WorkflowScheduleList' aspx page and open it in a text editor.
    3. In the fourth line underneath Namespace="Nintex.Workflow.ServerControls" TagPrefix="Nintex" %>, add the following:
      <%@ Register Assembly="Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" Namespace="Microsoft.SharePoint.WebControls" TagPrefix="SharePoint" %>
    4. Save the file.