I currently have Illustrator CS5 on my PC, Windows 8. I don't have InDesign, but would like it soon. I downloaded the InDesign Trial version. I go to do some work in Illustrator, and my type tool will not work at all. I tried resetting preferences. I ended up Uninstalling InDesign (Which it turns out I had InDesign CS6 trial as well as CC version, not sure if that makes a difference). Once uninstalled, Illustrator works.
Is there a compatibility issue here? I'd like to know if I need to upgrade my Illustrator in order to have InDesign.
It shouldn't affect it - however they might have shared resources.
Would be best to see if reinstalling your Illustrator works for you?