Numbers will not open previous spreadsheet
OK, my knowledge of Numbers is limited but here goes - I downloaded the newest version of Numbers and opened a spreadsheet, did some work in it and closed it. Now when I go to open the same spreadsheet, it says "You need a newer version of Numbers to open this spreadsheet." I went to the App Store and checked it and it says I downloaded the most recent version of Numbers. What can I do? It does not allow me to download numbers again, so it seems that I am stuck, any suggestions?
MacBook Pro, OS X Mavericks (10.9)