Project not getting opened up in Msp 2010?

Hi everyone

Suddenly my project is not getting opened up in Microsoft Project 2010,It is getting opened up in server,but is is not opening in Microsoft Project 2010,as soon as i try to open it,a message displays closing file 'projectname',all other projects are opening,only this one is giving problem

If anyone has any idea ,plz lemme know

any help will be greatly appreciated

Thanks

Anuj