Migration Guide : Migrating from Version 4.0, 4.01, or 4.02 : Other migration concerns : Runtime code for nonvisual parts in server applications
Runtime code for nonvisual parts in server applications
The runtime format of public interfaces for nonvisual parts has changed. The changes affect the #IS_... methods generated for parts.
If you have nonvisual parts that you developed in a Version 4.02 or earlier application and you want to use those parts in a server application, you must re-generate the parts' runtime code. To do this, select the parts in the Organizer and then select Generate > Runtime Code from the Parts menu.
 
Last modified date: 07/02/2019