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    Error "at System.Web.UI.MasterPage.CreateMaster..." creating workflow in 2010 mode

    Status: Validated

    ISSUE
    When trying to create a workflow in any 2010 mode site on a 2013 Farm, the following error might occur:
     
    at System.Web.UI.MasterPage.CreateMaster(TemplateControl owner, HttpContext context, VirtualPath masterPageFile, Dictionary contentTemplateCollection)
    ERROR CODE
    RESOLUTION
    Redeploy the compatibility solution "NintexWorkflow2013BackwardsCompatabilityUI.wsp" from: Central Administration > System Settings > Manage Farm Solutions.

    If the deployment does not succeed using the UI and the error still appears, use the following PowerShell command:
    Install-SPSolution -Identity nintexworkflow2013backwardscompatibilityui.wsp -GACDeployment -CompatibilityLevel 14 -Force

    Note: the "-Force" operator should only be used as a last resort.

    This will update the NintexWorkflow files in the 14 hive.

     

    ADDITIONAL INFORMATION
    This error indicates that the copy of the Nintex WorkflowDesigner.aspx pages in the 14 hive are incorrect.
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