Some of my Max friends have the problem of Max file gets corrupted or file fails to open..I have two choices either to merge it into an empty scene or look for an autoback file. And still if it does not get recovered,, You have lost your work :-(
Anyways for the future safety you guys can do one thing i.e save using the little + button on the "save as" function under the file menu. What this does is saves sequential Max files but just changes the number to the next in line.Now you will have many copies of a scene file and if the last file you were working on is corrupted, you can a least get back to the file prior which has 95% of the work you were working on anyway.
Good Luck
Quote of the day
"Nothing can truly hold us back from becoming who we want to be - we choose our fate, and every excuse is just another nail in the coffin."