Thank you so much for your reply. As for no happy ending: we've given up on that and would be happy with any kind of ending that involves a fixed ceiling and no out-of-pocket expenses for damage we didn't cause to the common element!
You ask, "Is there a question about whether you can sue?"...
We own a top (3rd) floor condominium in a 1920s building in Illinois/Chicagoland area.
In early December, ceiling cracks developed in our bedroom. This was reported to our (relatively new) management company immediately. Within 24 hours, the cracks spread over the entire ceiling and began...