Validating in content type creation

If i try to validate 'selectionDefaultLocation' when creating a relation list field type i don't get any exception, and i get the following error in ezpublish debug

Error: eZTemplate   Feb 21 2013 11:33:18
Cannot retrieve attribute of a NULL

https://gist.github.com/jpingo/9da209ded0918c2e704b#file-gistfile1-php-L52

Validating in content creation

If i try to validate the creation of an object using a non existing location in the object relation list field i get the following exception

There was 1 error:

1) eZPublishAPIRelationsList::testTC1500CreateAnObjectRelationsListObject
Exception: Could find Content with id'sarray (
  0 => 999,
)

This does not seem to be the format for the API exceptions ... is there something missing?

https://gist.github.com/jpingo/9da209ded0918c2e704b#file-gistfile1-php-L221