Troubleshooting custom modules

This page describes how to resolve common errors that you may encounter when working with custom modules.

Modules missing in the application list

Problem: You have created or imported a custom module that has its own administration pages, but the module’s application is missing in the application list. The problem may also occur with existing custom modules after you create or import a new site.


  • You may need to reload the entire Kentico administration page in your browser, including the header section.
  • Make sure the module is assigned to the currently active site:
    1. Open the Modules application in the Kentico administration interface.

    2. Edit your module.

    3. Switch to the Sites tab and assign the module to your sites.

      Tip: Alternatively, you can edit your sites in the Sites application and assign modules on the Assigned objects tab.

  • For users without the Administrator or Global administrator privilege level, you may need to ensure that the module has the Read permission defined and that the user has the given permission assigned.

See also:

Custom object types (classes) missing in selectors

Problem: You cannot find custom object types (module classes) in selectors within the administration interface. For example when setting the Object type in the properties of UI elements or the Reference to value in the settings of foreign key class fields.


  • If you are the developer of the custom module, make sure that you have generated the Info and InfoProvider code for the class. On web application type projects, you also need to include the code files into the project in Visual Studio and build the solution.
  • You may be missing the resource string representing the given object type name. If the resource string does not exist, the object type is available under the default name in format: ObjectType.<class code name with an underscore>

See also: