Join two doctype?

I used the schema and data from document “Tamino Schema definition / Represent joining”.
I used the schema editor to define the schema.
I got the error dialog without any message or error code when I got the schema from tamino that I had defined before.
I tried to test the example.
But I can’t the current result.
Who can help me to solve this problem?


Can you please post a screenshot of the error dialog and also send your schemas that are being joined.