I used 3 version of 3dsmax. 2015 for doing a job when need plugin compatibility, 2016 for daily main usage, 2017 for compatibility with some friends.
DRserver has behavior to pre-run the latest max versioin but I need it use max 2016 as default. I don't want to always switch to max 2016 each time I need DR.
or maybe make it simply remember the last version used.