I just tried to help someone the other day that was using an old version of CCP. Apparently, if someone uses the new version of CCP to make a file, the old version of CCP can't use it. I have no way to verify this but I have no reason to believe the person was lying to me either.

Your best bet - upload the file from the remote, using the old software you have. Save the file with a unique name for backup. Save the file again using a different name that you will be working with. Go to the Sony projector page, open the 'IR Database Navigator' and go to Projectors > Epson > and use #794. This covers many modern Epson projectors. Drag and drop the commands you need over the Sony ones. Download & test.

Your next best bet is to find a programmer near you. Surely there is someone close by. The cost of shipping a remote back & forth and programming, shouldn't cost less then just having someone local swing by and do it real quick.