It is a problem with an Intel driver and hardware accelerated transcoding. Plex is working with Intel on a fix.
Quick workaround: turn off h/w acceleration (granted, may not be feasible due to CPU limitations).
Less quick workaround: delete offending driver. See post below for additional details.
Use PuTTY or similar to SSH to your DS. Also, you’ll need to use the sudo command to gain root privileges. Preface the mv or rm command with sudo or use sudo -i to become root.
sudo -i
cd "/var/packages/Plex Media Server/target/lib/dri"
rm iHD_drv_video.so
or
mv iHD_drv_video.so iHD_drv_video.so.bak
Upgrading or reinstalling PMS will reinstall the driver, so you’ll have to repeat the procedure.
login as: user
user@host's password: <User Password>
user@host:~$ sudo -i
Password: <Admin Password>
root@host:~# cd "/var/packages/Plex Media Server/target/lib/dri"
root@host:/var/packages/Plex Media Server/target/lib/dri# ls iHD*
iHD_drv_video.so.bak
root@host:/var/packages/Plex Media Server/target/lib/dri#
