Can't open a dictionary if one of its import has been deleted

[at055612]

error text:

Document not found: DocRef{type='Dictionary', uuid='f5c7c829-a231-468f-9c09-4e971905776f', name='Farm Animals'}

It should probably open the dict and in the list of imports mark the missing one with a warning triangle or similar. It should build its word list by ignoring the missing import. The import may have been deleted or had its perms changed.