Plex released v.1.41.0.8988 earlier today. Release Notes.
It should install on the DS415play.
If this happens in the future, here’s how to check:
The DS415play has an Intel Atom CE5335 CPU, built upon Intel’s Evansport architecture. Reference: What kind of CPU does my Synology NAS have?
After downloading the Plex Media Server spk from plex.tv, uncompress it using 7-Zip or similar tools.
In the directory, there is an INFO file. Open it with a text editor. Look for the entry arch="x86 evansport". In the beta that would not install, it said arch="x86". “evansport” is present in the beta released earlier today.
