Desktop Plex Media Player Version 2.40.0

[Achilles]

You will need to provide more information. It launches just fine for me:

If you updated to 2.40 and are having issues here is the link in Announcement for the last version:

Plex Media Player

Plex Media Player v2.39.0 is now available to all macOS and Windows users. DOWNLOADS: macOS Windows NEW: Desktop web-client updated to 3.104.2 Added an item count to collections FIXED: Fixed delay when skipping forward or back using arrow keys Fixed scrollbar sometimes showing up in toolbar Fixed seeking sometimes not updating progress bar and elapsed/remaining times Fixed an issue that could cause home page hubs to display a Content Unavailable error Fixed showing the more actions menu…