Organic Groups module  messes up node editing 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?
Just figured out that the problem was not caused by the references module, but by the "Organic Groups" (og) module. It seems to be a known bug in the organic groups module that basically hides/disables all fields for custom content types that are not marked as group or something like that. There's a report about this in http://drupal.org/node/1029230.  

Disabling the organic module make the fields come back again, and even relationships seems to be editable again. I can live without organic groups for now, and considering the severity of the bug I will definitively not try to use that module again until it has been fixed.