When clicking the Licensing link in Nintex Workflow Management, the following error might occur:
Sorry, something went wrong
An error occurred during the processing of /_layouts/NintexWorkflow/SettingConfigurationProperty.ascx. The base class includes the field 'LiteralLabelText', but its type (System.Web.UI.WebControls.Literal) is not compatible with the type of control (System.Web.UI.WebControls.Label).
ULS Log entry:
System.Web.HttpParseException: The base class includes the field 'LiteralLabelText', but its type (System.Web.UI.WebControls.Literal) is not compatible with the type of control (System.Web.UI.WebControls.Label).
Retract and re-deploy the Nintexworkflow2013.wsp solution
Note: Ensure solution is deployed to all web applications that needs to run Nintex Workflows.
Deployment issues with the Nintex solutions can manifest itself in a variety of ways. If a recent installation or upgrade has been conducted and there are issues with accessing parts of Nintex Management within Central, its recommended to review the solution deployment of all nintex solutions. If any discrepancies are found, its recommended that you retract and redeploy these solutions.
Depending on the solution in question, its recommended that you retract related solutions as well. For instance it's recommended to retract the nintexworkflowXXXX.wsp solution prior, if you're needing to retract and redeploy the nintexworkflowXXXXcore.wsp (then redeploy nintexworkflowXXXX.wsp). This is the same for the Nintex Forms solutions