I was unable to install this readynas build.
I attempted to install it through the normal app update/upload provided with the readynas web management.
The first attempt was with plex still running (which has always worked on plex current builds), and a second attempt after stopping plex via the readynas web app admin page.
Both attempts resulted in an immediate dialog with the message: cannot install application plexmediaserver.
I have downloaded an archive of my nas system logs. I can provide them intact or with specific log files to a PM of choice.
Plex continues to run 1.14.1.5488 with no apparent changes (doesn’t appear anything was modified or partially installed).
readynas model: 528x
readynas os6 version: 6.10.0-t272 beta 3
edit: I also attempted to install this build on 2 other readynas devices which have not had plex installed and both failed as well. So this leads me to believe that something is wrong/broken/different about the installer than the release version, and does not appear to be related to the existing installation.