Uninstalled Acrobat Pro DC trial for Mac... now my CS 4 Acrobat doesn't work.

I just uninstalled Acrobat Pro DC trial (I didn't like it).  But, now my CS 4 Acrobat doesn't work.  I purchased Creative Suite 4 Master Collection in 2009... back when I was on OS 5 or OS6.  Now I'm on OS 11 and my CS4 will not re-install Acrobat.  Any suggestions?  I tried (without any sucess) to download CS4 Master collection at  Download Adobe Creative Suite 4 products