After update - Plex Android 5.1.1.119 playback broken

Plex 5.1.1.119 on Minix Neo U1 running Android 5.1.1 on PMS 1.2.5.2966 (Linux)

I have 2x Minix Neo-U1 Android media boxes - been using them for the last year with no problems. Plex Android just updated to latest version with new TV interface. Now I cannot play any video at all. Found this in the device log:

11-05 13:05:56.134  e: An exception occurred: com.google.android.exoplayer.j: com.google.android.exoplayer.x: Decoder init failed: AML.google.ac3.decoder, MediaFormat(null, audio/ac3, -1, -1, -1, -1, -1, -1.0, 6, 48000, null, -1, false, -1, -1, -1, -1, -1)
11-05 13:05:56.140  e: Stacktrace: com.google.android.exoplayer.j: com.google.android.exoplayer.x: Decoder init failed: AML.google.ac3.decoder, MediaFormat(null, audio/ac3, -1, -1, -1, -1, -1, -1.0, 6, 48000, null, -1, false, -1, -1, -1, -1, -1)
	at com.google.android.exoplayer.w.a(SourceFile:414)
	at com.google.android.exoplayer.w.m(SourceFile:400)
	at com.google.android.exoplayer.w.a(SourceFile:768)
	at com.google.android.exoplayer.t.a(SourceFile:270)
	at com.google.android.exoplayer.w.g(SourceFile:524)
	at com.google.android.exoplayer.w.a(SourceFile:507)
	at com.google.android.exoplayer.am.a(SourceFile:129)
	at com.google.android.exoplayer.p.j(SourceFile:434)
	at com.google.android.exoplayer.p.handleMessage(SourceFile:213)
	at android.os.Handler.dispatchMessage(Handler.java:98)
	at android.os.Looper.loop(Looper.java:135)
	at android.os.HandlerThread.run(HandlerThread.java:61)
	at com.google.android.exoplayer.g.y.run(SourceFile:40)
Caused by: com.google.android.exoplayer.x: Decoder init failed: AML.google.ac3.decoder, MediaFormat(null, audio/ac3, -1, -1, -1, -1, -1, -1.0, 6, 48000, null, -1, false, -1, -1, -1, -1, -1)
	... 12 more
Caused by: android.media.MediaCodec$CodecException: Error 0xfffffc0e
	at android.media.MediaCodec.native_configure(Native Method)
	at android.media.MediaCodec.configure(MediaCodec.java:581)
	at com.google.android.exoplayer.t.a(SourceFile:258)
	at com.google.android.exoplayer.w.m(SourceFile:389)
	... 11 more

11-05 13:05:56.141  i: [video] Error detected before playback

Attaching both server log and device log. The device is X-Plex-Device-Name => NEO-U1-lounge on 192.168.0.138.

Have tested on other device, identical in every way except for the upgraded Plex client.

Seems its a problem with my end. Marking solved.