Plex Playback no longer working on iOS and Apple TV

All of a sudden I cannot play back my media today after updating to the latest QNAP Media Server (PlexMediaServer_1.7.5.4035-313f93718_x86_64.qpkg)

When I try to play media (that played fine in the past) I receive the following error:

"Playback was terminated by the server. Conversion Failed. A required codec could not be found or failed to install.

Under “Now Playing” in the web interface the item says that both Video and Audio are “Direct Stream” but when I look at the log I see the following:

Jul 19, 2017 23:05:22.755 [0x7f2a9b6fb700] DEBUG - Streaming Resource: Reached Decision id=39941 codes=(General=1001,Direct play not available; Conversion OK. Direct Play=3000,This app cannot play this item. The reason is: audio.channels limitation applies: 6 > 2. Transcode=1001,Direct play not available; Conversion OK.) media=(id=126288 part=(id=127310 decision=transcode container=mpegts protocol=hls streams=(Video=(id=249231 decision=copy width=1280 height=718) Audio=(id=249232 decision=transcode bitrate=640 encoder=ac3 channels=6 rate=48000))))

Again, this same file will play fine in the web interface and on my Android TV App.

Also there are times where the whole Plex server will lock up and I will need to restart it.

One other thing I not see is the following: (I changed the device id as I didn’t;t know if it was sensitive.)

ul 19, 2017 23:14:03.102 [0x7f2a91fff700] DEBUG - HTTP 429 response from GET https://plex.tv/api/codecs/ac3_encoder?build=linux-ubuntu-x86_64&deviceId=f29302cf-XXXX-XXXX-b17f-b876d58eb3d5&oldestPreviousVersion=1%2E0%2E3%2E2461-35f0caa&version=46b03cf-1241 Jul 19, 2017 23:14:03.103 [0x7f2a91fff700] ERROR - Codecs: Failed to download XML for codec 'ac3_encoder' Jul 19, 2017 23:14:03.103 [0x7f2a91fff700] ERROR - Error configuring transcoder: Encoder install failed: ac3 Jul 19, 2017 23:14:03.103 [0x7f2a91fff700] DEBUG - Streaming Resource: Terminated session 0x7f2aa0426b20:E9EE16B1-82A5-4C3E-AB9A-BA047B37E413 with reason Conversion failed. A required codec could not be found or failed to install.

How can I get the proper code to install so that this can play? I assume something happened during today’s Plex Media Server upgrade.

When I go to the xml file referenced in the last error log entry I see the following:

<Response code="429" status="Limit of devices using codec exceeded"/>

What does this mean? I only have the one Plex Media Server.

that should only be temporary. ( an hour if i recall )

Thank you! was driving me nuts. Is working fine now.