Pages won't allow me to do anything with my document like save, export to PDF, copy and paste to anywhere else, take a screenshot...absolutely nothing. It just makes a "squonk" noise whenever I try.

Pages won't let me save my document in any manner. I'm using Yosemite 10.10.2 and the latest update of Pages (can't get the version number because Pages won't even let me go there). It won't let me export the document into another format, copy and paste the document into another document, take a screenshot, absolutely nothing. I even tried just clicking the red dot to close the document and hope that it saves, but it won't let me do that either. I'd love to force quit, but I haven't even named the document and am afraid that hours spent on a paper will be lost to the void.