Having trouble saving new files in Ai CS3 on my new Mac Os Sierra
I had to purchase a new Mac two weeks ago. My old iMac was ten years old and was having issues. The new Mac is a macOS Sierra version 10.2.5. My concern was the software which was Adobe Suite CS3 and its compatibility. I was assured that it would work fine and I had to have it reinstalled onto the new computer from the original discs. It works great as far as my being able to open the old files from my previous computer. I can make revisions, save the files without any problems. My main problem now is that while I can open the software - whether inDesign, Photoshop or Illustrator - I can work in them but when I go to save the files, it closes and I lose the work. I am not sure as to why I am not allowed to save any work and was wondering if anyone has experienced this and if anyone has any idea as to how to solve this problem.

