Document Error

I was creating a drawing out of model and when tried to save it said file is corrupt and can not save. So I saved as a different file under different location. It let me save the file but now when I am trying to open it, it gives me this message. I contacted solidworks support and they say that they do not know what would have caused it. Does anyone have any idea on how to recover hours worth of work back?

SolidworksDrawings And Detailing