I have a MPP file that is probably corrupt – any experts willing to help wi

I have an MPP file, totally created in Project 2010, either hangs or causes Project 2010 to crash. Seems that there’s some corruption in it. Have tried downloading the (few) solutions out there, without success. Not many good solutions it seems. Anyone have a clue to how resolve? This 7MB file is pretty significant, and rekeying it really isn’t an option.
project file?