Maya 2017 Compatibility Issues

The render layers I set up in Maya 2014 - 2016 are not transferring into 2017, and installing 2017 seems to have corrupted all the older versions on my home PC (2014, 2015, and 2016 are no longer loading). A simple repair reinstall does not work, so I have had to uninstall 2015, download another copy,  and reinstall. 2017 Seems to be working, but there have been a lot of comparability problems, so I want to have the same copy at home that I use in the lab.