Export it as a idml file and try opening that..
Hi, that is always a bummer. We, Markzware, whom I represent, can fix bad InDesign files. That said, it is hard to say what is going on in your situation. Would need more details. What is the error message, if any? What do you mean by corrupt? Are any fonts or images, themselves perhaps corrupt? If it opens for you, indeed, export as .IDML (File - Export). If there is something else, let me know.
Here is information on our Corrupt InDesign Recovery Service.
Message was edited by: David Dilling - grammar