Plex Media Server will not open - macOS High Sierra

No matter what I do, I can’t get PMS to open on my mid-2010 Mac mini (running the latest version of macOS it supports: High Sierra 10.13.6). I’ve reinstalled it half a dozen times, deleted the library files a couple times, even downloaded some other versions.

Every single time I double click to open the app (after I move it to the Applications folder), I’ll see another chevron appear in the menulet bar for a split second before it disappears. If I have the Force Quit Applications window open, it never appears in the list of apps that are open. I’m almost positive it’s not a security (Gatekeeper) issue.

Is there any way to get it to work?

Server Version#: various, mostly 1.22.0.4163-d8c4875dd

Please check out your server logs and/or upload them here (see “manually finding logs” in the linked support article; you’ll be looking for the Plex Media Server.log files).
Could be something about your database being corrupted…

I’m seeing the exact same thing running 11.2.3, Plex chevron appears in the menu bar for a second then disappears.

dangolhankman, wondering if you found a solution for this?

Thanks!

I found an error message complaining that a “Plug-ins” folder wasn’t found in Application Support, which looped until the program quit. I made the folder and thought that would fix the problem, but Plex still doesn’t even acknowledge that PMS is installed.

Here’s my latest log:

Mar 18, 2021 11:33:21.727 [0x70000fb1a000] INFO - Plex Media Server v1.4.1.3362-77c6a4f80 - Apple Mac - build: darwin-x86_64 macosx - GMT -07:00
Mar 18, 2021 11:33:21.728 [0x70000fb1a000] INFO - MacOSX version: 10.13.6, language: en-US
Mar 18, 2021 11:33:21.728 [0x70000fb1a000] INFO - Processor Intel® Core™2 Duo CPU P8600 @ 2.40GHz
Mar 18, 2021 11:33:21.728 [0x70000fb1a000] INFO - /Applications/Plex Media Server.app/Contents/MacOS/Plex Media Server
Mar 18, 2021 11:33:22.115 [0x70000fe2c000] DEBUG - BPQ: [Idle] → [Starting]
Mar 18, 2021 11:33:22.155 [0x70000fe2c000] DEBUG - Opening 20 database sessions to library (com.plexapp.plugins.library), SQLite 3.13.0, threadsafe=1
Mar 18, 2021 11:33:22.206 [0x70000fe2c000] INFO - SQLITE3:0x70000fe2b180, 283, recovered 656 frames from WAL file /Users/Talon/Library/Application Support/Plex Media Server/Plug-in Support/Databases/com.plexapp.plugins.library.db-wal
Mar 18, 2021 11:33:22.348 [0x70000fe2c000] DEBUG - Running migrations.
Mar 18, 2021 11:33:22.369 [0x70000fe2c000] DEBUG - ChangestampAllocator: initialized to 0
Mar 18, 2021 11:33:22.550 [0x70000fe2c000] ERROR - Error: Unable to set up server: bind: Address already in use (N5boost16exception_detail10clone_implINS0_19error_info_injectorINS_6system12system_errorEEEEE)

This error means there’s already some app running on your Mac that’s listening to the port used by Plex (32400). Therefore Plex cannot bind to that port / work.

You can run the following command in the Terminal app to check what command/app that is:

sudo lsof +c 0 -P -iTCP:32400 -sTCP:LISTEN

Remarks:

  • you need to run this command with the sudo prefix – if you’re the admin of this Mac, this should require the confirmation of your password before execution
  • +c 0 causes the output to show the full command instead of truncating it (e.g. Plex\x20Media\x20Server)
  • -iTCP:32400 filters the output to commands binding to tcp port 32400 (otherwise you’ll end up with a pretty long list)
  • -sTCP:LISTEN filters the output to commands listening to the defined port

I remember there’s been some issue in the past when some Adobe products started running on the same port.

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