Unable to install new version of Illustrator AND keep current version.

[Dianne at Allegra]

 I previously had the two versions running on this PC, but had some hardware issues and the repair ended up in a clean install of Windows which means re-installing CC and apps. I have Creative Cloud preferences set to Auto Update and "Remove Older Version" is unchecked and "Show Older Apps" is checked . But when I attempt to manually install the newer Illustrator it removes the current. I need to keep the old version for compatibility issues with some of my plug-ins and access to the Pantone color book. How can I prevent CC from uninstalling my current AI version?

[kglad · Accepted solution]

what are the two versions?  (they need to be major, not minor version changes.)

[Peru Bob · Accepted solution]

To elaborate on the answer by kglad :

If you have version XX.0 installed, XX.1 or XX.2 will overwrite XX.0.

XY.0 won't overwrite XX.0 or XX.1 or XX.2. 

[Dianne at Allegra]

That was it, I wasn't using an old enough version! thanks for the info!!

[kglad]

@Dianne at Allegra 

you're welcome.