the file is missing many elements and it cannot be opend

[Anonymous]

file cannot be opened
when i open the file revit ,, the revit show me this message
( the file is missing many elements and it cannot be opend)

[L.Maas]

Your model became corrupted. See if you can go back to an earlier version of your model (backup)

HERE more information about this issue

[ennujozlagam]

have you tried tick audit before opening the file and see if helps. thanks