Cannot setup my CI 1 series

A year ago, I setup my CI 1 series, it worked perfectly fine until recently, when I couldn’t open Sequel or Wavelab anymore. I tried everything, nothing worked, so I decided to reinstall those two things. Now that I am trying, it is saying that I cannot, maybe there isn’t enough space on the disk, but I checked and there is enough. I even uninstalled some stuff just to make extra space, still not working.

I have even tried downloading them online, Wavelab installed just fine, but then stopped working.

What should I do?