Thanks for the logs attached to the ticket #1473 this issue will be fixed in build 2403 as https://www.ventismedia.com/mantis/view.php?id=17845

Can you please capture this in a debug log (step 4b) and attach the log to a Support Ticket: https://www.mediamonkey.com/forum/viewt ... 30&t=86643 This will allow the developers to see why this occurs for you.

When I try to sync with Spotify I get this message when Use Sync now and the option "Only include content that matches files already in the database" is disable.

Application throw an exception track has failed to add to
library?
(D:\DelphiMediamonkeyClean\HTML5Monkey\Devices.pas,line 3046)

Would you like to restart MediaMonkey in Safe mode?

My system:
windows 10 20h2 - 19042.906
i9 9900k - 32GB
Database in NVME local
Media in Qnap NAS
Mediamonkey 5.0.0.2338 (Portable mode)