Application Manager won't install Illustrator

I've been trying to install Illustrator CS6 for literally weeks. Every time I try, the install either freezes at a completely random percentage, or give me an error like this:

I was having the same problem with Photoshop for a couple of days, but then it just worked. I have installed other programs like Lightroom and Edge without issue.

Is there some other way I can install Illustrator? It's extremely frustrating to have to pull out my laptop every time I need Illustrator because it won't install on my workstation.