Too many Bric::Biz::Element::Container objects found

Hi,

After reverting to a previous version of a document, I got
the error
message above. Unfortunately, now it occurs with every
action I try to
perform on that story.

I think I could provide with you with the information
regarding the
story related database contents but I do now know how and
what
information would be relevant.

If you could help I'd be very thankfull.

Greetings,
Wilbert.