I have created som sets wehere I want to show records that do not have a child record in a certain file.

This seems to cause some problems. Sometimes it works, and sometimes it doesn't. The way it does not work is that it crashes, and it is impossible to open the set in view mode. Only way is to edit set, and change condition to show records always - even when no child exist.

Further it some cases it places two set-files on the users screen, when the problem occur.

Does anyone know the exact restiction about this function "Show only parent record when child does not exist"?

Are there any restriction about one-many or one-one relation?

Are there any restriction in respect of number of links to the parent table?

I'll try this one first, but mayby I need to zip the sets involved?