ISSUEWhen customize the item form is clicked to browse to Nintex Forms designer to design a form the following error might occur:
The expression prefix 'NFResources' was not recognized. Please correct the prefix or register the prefix in the section of configuration.
- Navigate to: Central Administration > Application Management > Manage web applications
- Select the Web application to use for Nintex Forms.
- Click on Manage Features from the ribbon.
- Deactivate (if active).
- Re-activate the "Nintex Forms feature.