I cannot open my company and the backups are nowhere to be found

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I need to do ONE last Invoice before I do my taxes and close the company.. of course this is when I lost everything. I click on SAGE then it opens the folder and for some reason the only file there is a shortcut which doesn't work. I don't recall that it was a shortcut so I honestly don't know what is going on. I searched and searched, I just can't seem to find the files. Even the backups are not there. I can redo all my invoices not a problem but all the expenses will take me forever. What am I supposed to do? Any tips on how I can search for this?