My multitrack screen has gone missing. I have the edit and CD screen but the multitrack refuses to show up. I need it to finich a project that I have been working on for the last few years. Any help would be appreciated.

Which version of Audition are you using? What exactly do you mean when you say 'the Multitrack screen refuses to load'? Are you trying to open up the Multitrack view  by opening a previous session file? Do you get the New Multitrack Session pop up pane asking for the Session Name, Folder and Template to use when you try to open a New session from the top of the File menu?