Annoying error alert when I open a PDF with an unsaved PDF still open

I am often working with multiple PDFs open at a time.  If I work on one, leave it open and unsaved, and open another PDF I get an error window that says 'Adobe Acrobat has recovered one or more documents that were not saved properly before Acrobat was shut down.  Click Yes to open the recovered documents.  If you click No, your changes will be lost.' 

The files are still open.  Acrobat didn't recover anything, as far as I know.  Acrobat was not shut down, the files are still open and in no danger of being lost.  This error window is annoying and pointless.  Can I please, please, PLEASE, PLEASE, PLEASE turn this error off somehow?