I'm using Keynote 5.2.2 on two different macs running Mavericks (though this issue is also happening with Keynote '09) and whenever I try to save a document, whether to iCloud or the local drive, I get a message that says "The file 'Document Name' couldn't be opened" and the file refuses to save. This also happens if I try to export as a pdf or word doc. This is incredibly annoying since I don't have MS Office installed on any of my machines and as a result I can't get any word processing done at the moment. Has anyone else encountered this issue? It's worth mentioning that I have NOT upgraded to iCloud Drive since I'm still running Mavericks on all of my machines (Yosemite is incompatible with a lot of my most important software). Could this be the source of the issue? Thanks in advance.