Possible to create a new feed importer for Feeds Node processor without defining a content type

Sorry if this bug has already been filed.

In 6.x it is possible to create a new feed importer using the Feeds Node processor without selecting a content type to which the feed should import. Then when you try to do an import, a bunch of nodes will be created which have no content type, and this will cause any number of Drupal errors.

This happened for me when using the File fetcher and CSV parser, but I imagine it would happen with others as well.

There needs to be some kind of validation on the saving of the new feeds importer type that forbids you to leave the content type empty, or else a default content type (which is used by Feeds) should be selected.