I have 6 macs for my templates all running latest version of VEP5 (5.4.16181) on El Capitan (10.11.6) and Logic Pro X (10.3.3). All are working well, however I am looking forward to using some of the new tools/features in latest version Final Cut Pro (10.4) which, unfortunately for me, is only compatible with Sierra. I haven't upgraded to High Sierra for fear VEP5 would not be compatible. I've searched this forum but haven't found a precise answer (compatible, not compatible). My apologies if I missed a post.
It is my understanding that VEP6 for the most part is now compatible with High Sierra. Is VEP5 compatible? All my plugins and tools are finally compatible as is Logic Pro X (obviously). I'm just waiting on word about VEP5 and whether or not I need to invest in upgrade accross all my Macs or not. I can't imagine I'm the only one in this situation but there it is.