Downloads not working in Mac Desktop app

I am seeing the same issue with Plex-1.3.0.910 for Mac.
Downloads work okay with PMP-2.41.0.1010


Here is my configuration.

Plex-1.3.0.910 on an iMac - macOS 10.13.6 High Sierra
PMS-1.16.7.1597 on QNAP TS-451+ x86_64 - QTS 4.3.6.1050 en-US
One subnet LAN, a few switches, no WiFi, no Remote Access, LAN is allowed without auth

My QNAP clock was running 2 sec earlier than the Mac.

Here is what I did

  • Started Plex, clicked on my Season 2 of Jellyfish.
  • Clicked the 3 dots on one of the episodes.
  • Chose Download.

Here is what I saw

  • An error window pops up within Plex, shaded gray, and it says
There was an unexpected error downloading "Demo Video - Jellyfish 3M Main 8bit HEVC"
  • That name is the metadata Title and Sort Title for that episode.

What I expected to see

  • The screen to switch to Safari and a download icon to whiz to my Dock.

My log files

In my server log I see the request for download get handled.
Sep 12, 2019 09:06:54.861 [0x7f083bfff700] DEBUG - Auth: authenticated user 1 as nibbles@sonic.net
Sep 12, 2019 09:06:54.862 [0x7f083a76a700] DEBUG - Request: [192.168.42.64:54084 (Allowed Network (Subnet))] GET /library/metadata/8530/subscription/modes?includePreferences=1 (4 live) TLS GZIP Signed-in Token (nibbles@sonic.net)
Sep 12, 2019 09:06:54.874 [0x7f083bfff700] DEBUG - Completed: [192.168.42.64:54084] 200 GET /library/metadata/8530/subscription/modes?includePreferences=1 (4 live) TLS GZIP 12ms 685 bytes
And in the player log I see an error.
2019-09-12T09:06:55.980 [ INFO  ] [Web] [Downloads] Creating subscription server://5b582979d5912a5e7878c4fac229aa5b91744929/com.plexapp.plugins.library 8530 
2019-09-12T09:06:56.042 [ INFO  ] [Web] [Downloads] Saving subscription server://5b582979d5912a5e7878c4fac229aa5b91744929/com.plexapp.plugins.library 8530 
2019-09-12T09:06:56.046 [ ERROR ] [Web] [Downloads] Error saving subscription server://5b582979d5912a5e7878c4fac229aa5b91744929/com.plexapp.plugins.library 8530 {
  "status": 400,
  "statusText": "Bad Request",
  "readyState": 4,
  "responseText": "<html><head><title>Bad Request</title></head><body><h1>400 Bad Request</h1></body></html>"
} 
2019-09-12T09:06:56.095 [ INFO  ] [Web] [Metrics] Updating session last interaction time 
2019-09-12T09:06:56.096 [ INFO  ] [Web] [QWebChannel(storage.setItem)] sending 

Attached are my logs, and thank you.

Plex Media Server Logs_2019-09-12_09-07-47.zip (318.5 KB)
Plex.log.zip (64.5 KB)

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