I can't open my Word files after update
Yesterday I updated my OS from Snow Leopard to El Capitan, along with installing Waterfox to replace Firefox and LibreOffice to be my office suite. N ow I can't open any of my files that were written in Microsoft Word 2004. I get a message saying that I can't open Power PX files – even though the files were written and kept on an Intel computer (late 2008 MacBook). I don't know what I might have done to prevent that, but I never suspected that it would happen. I don't see how they could be considered PowerPC files, and I never have had any problem with using Word, even with documents people sent me in later versions of Word, nor did they have problems with Word files I sent them.
I don't know what to do. These form the majority of my files, and I really need them. Should I try to restore everything on the computer from the latest backup (Time Machine) before I did the updates? I'm not really sure how to do that, but I'm certain I can find out. But if there's another way to handle this, I'd really like to know that. Boy, do I wish that I hadn't updated!
Thanks!
MacBook