The most economical way to solve the problem is to use the DNG converter (free from Adobe) and create digital negative copies of your raw files. Or, you could incorporate Lightroom into your workflow. Or, you could upgrade to Photoshop CC. I think you can still purchase Photoshop CS6 as well. You're going to have to do something if you want to continue using Adobe products. Another choice would be to use the software provided with your camera.