Reference problem when editing items
problem
An error shows up when editing elements with old references:
http://wiki.supermemo.org/index.php?title=File:After_editing_question_with_old_reference.jpg
comment
This is probably a problem with reference count (i.e. counting registry member use) for SuperMemo references. There have been quite a few reports, but none involved loss of data (e.g. missing references or reference fields). Currently the best option is to review errors and warning in Repair collection with Rebuild registries checked.