Updated header to reflect real cause of problem
I've created some content types using node references for "belongs to" or "owned by" relationships.
When I add a new node, selecting the node references seems to work fine, and the default "list view" showing the newly created nodes also shows that the relationsship is correct. However, when I try to view or edit a single node, the form displayed includes only the "Title" field, and nothing else. I've also verified through "Manage fields" and "Manage display" that my node reference field is supposed to be displayed, but it still does not seem to work.
Do you have any ideas?