Error when opening file

I'm sure others have come across this before. When i try to open a file i get this error: "An attempt was made to access Site Massing - Central.rvt past its end." Any idea what this means and am is this file lost? Its the first time i have seen it. I cant think of what i could have done to the file to have this happen. Any comments, helps, thoughts are appreciated.

Thanks.

There was a thread a while back about "Past it's End" error messages. Didn't seem like anybody knew what the problem was. Some people had this message on a large file, some small. Some had it happen on a workshared file, others not.

General consensus was, contact Revit support.

Sounds good, I will do that. Thank you for replying!