We add some extra node data to our template, paragraph and dialog definitions in order to know which version is present on an instance.

This is done in the templating module. For a project a new folder is created. This makes it easier to import and export between developers. The folder contains all definitions plus a node data node called 'version'. This works great for the templates and paragraphs, but when we add it to the dialog definition it results in an HTTP 500 when requesting any dialog.

I added some screenshots of the admin interface when the dialogs work (dialog_ok.png) and don't work anymore (dialog_500.png).

According to a colleague it used to work in earlier versions of Magnolia, but in 4.01 it gives the error.