Not responding

Hi, having problems with the NaNo trial version of Scrivener. Or more precisely the file I’ve been working on it seems after a little more investigation. For the last week I’ve been using it with no problems whatsoever but tonight it has stopped responding as soon as I click on anything. I can start a new project and have no problems but the one I was working on just freezes the whole thing up. I’ve tried loading up an older version of the same project and it still freezes :cry: I’ve tried uninstalling and reinstalling with no effect. Is there anything I can do to try to fix this? Or am I just going to have to accept the file is corrupted? I’m running Windows 7 if that helps. And my dog probably has more technical know how than I do :confused: