# Issue when try to save modification on library **URL:** \ **Category:** Plex Media Server\ **Tags:** server-synology, library-management\ **Created:** [November 24, 2025, 9:47am UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829 "2025-11-24T09:47:15Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![YOS92](https://avatars.discourse-cdn.com/v4/letter/y/ee59a6/32.png) [@YOS92](https://forums.plex.tv/u/YOS92)\ **Post date:** [November 24, 2025, 9:47am UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/1 "2025-11-24T09:47:15Z")
Server Version#: 1.42.2.10156 Player Version#: 4.155.0 ![2025-11-24_10-43-24](https://global.discourse-cdn.com/plex/original/4X/c/7/a/c7ad29aaae88f73405a43ed2221f43bcc47159b5.jpeg) ---
**Author:** ![drzoidberg33](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/drzoidberg33/32/4184_2.png) [@drzoidberg33](https://forums.plex.tv/u/drzoidberg33)\ **Post date:** [November 24, 2025, 9:56am UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/2 "2025-11-24T09:56:51Z")
Can you see if this happens with the local web client (i.e. [http://127.0.0.1:32400/web](http://127.0.0.1:32400/web))? ---
**Author:** ![drzoidberg33](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/drzoidberg33/32/4184_2.png) [@drzoidberg33](https://forums.plex.tv/u/drzoidberg33)\ **Post date:** [November 24, 2025, 10:39am UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/3 "2025-11-24T10:39:35Z")
Found the problem which is in the latest web release (4.155.0) - we’ll be releasing a fix for this soon. ---
**Author:** ![YOS92](https://avatars.discourse-cdn.com/v4/letter/y/ee59a6/32.png) [@YOS92](https://forums.plex.tv/u/YOS92)\ **Post date:** [November 24, 2025, 11:01am UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/4 "2025-11-24T11:01:57Z")
great !! ! thanks ---
**Author:** ![drzoidberg33](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/drzoidberg33/32/4184_2.png) [@drzoidberg33](https://forums.plex.tv/u/drzoidberg33)\ **Post date:** [November 24, 2025, 11:10am UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/5 "2025-11-24T11:10:00Z")
The local bundled version will still work fine, it’s just [app.plex.tv](http://app.plex.tv) that is affected. ---
**Author:** ![YOS92](https://avatars.discourse-cdn.com/v4/letter/y/ee59a6/32.png) [@YOS92](https://forums.plex.tv/u/YOS92)\ **Post date:** [November 24, 2025, 12:52pm UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/6 "2025-11-24T12:52:21Z")
ok I’ll try ---
**Author:** ![drzoidberg33](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/drzoidberg33/32/4184_2.png) [@drzoidberg33](https://forums.plex.tv/u/drzoidberg33)\ **Post date:** [November 24, 2025, 4:19pm UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/7 "2025-11-24T16:19:23Z")
Should be resolved in [4.156.0](https://forums.plex.tv/t/plex-web/20528/467), thank you for the report! ---
**Author:** ![YOS92](https://avatars.discourse-cdn.com/v4/letter/y/ee59a6/32.png) [@YOS92](https://forums.plex.tv/u/YOS92)\ **Post date:** [November 27, 2025, 7:12pm UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/8 "2025-11-27T19:12:43Z")
Hy, I still have this issue even with latest web version : 1.456.0 ![Capture d’écran 2025-11-27 à 20.11.50](https://global.discourse-cdn.com/plex/original/4X/9/7/3/97358f0901986514f4c17ec2cd4e0073fe9594fb.jpeg) ---
**Author:** ![drzoidberg33](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/drzoidberg33/32/4184_2.png) [@drzoidberg33](https://forums.plex.tv/u/drzoidberg33)\ **Post date:** [November 28, 2025, 7:00am UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/10 "2025-11-28T07:00:01Z")
Can you please provide the full [server logs.](https://support.plex.tv/articles/200250417-plex-media-server-log-files/) ---
**Author:** ![YOS92](https://avatars.discourse-cdn.com/v4/letter/y/ee59a6/32.png) [@YOS92](https://forums.plex.tv/u/YOS92)\ **Post date:** [November 28, 2025, 7:30am UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/12 "2025-11-28T07:30:38Z")
[Plex Media Server.zip](https://forums.plex.tv/uploads/short-url/i3CPToiLQzvbB6CaHXEcz5sw4jA.zip) (315.9 KB) ---
**Author:** ![drzoidberg33](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/drzoidberg33/32/4184_2.png) [@drzoidberg33](https://forums.plex.tv/u/drzoidberg33)\ **Post date:** [November 28, 2025, 7:50am UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/13 "2025-11-28T07:50:24Z")
Thanks! I’m a bit confused how you’re able to get into this scenario, the scanner and agent in your request are not compatible and would never work correctly, the web interface should be preventing you from even selecting this combination. Can you try and change the agent and scanner to the correct values and see if that helps? For this specific library of yours (the Concerts one) the scanner should be set to “Plex Movie” and the agent to “Plex Personal Media”. Can you try that and see if it resolves your issue? ---
**Author:** ![YOS92](https://avatars.discourse-cdn.com/v4/letter/y/ee59a6/32.png) [@YOS92](https://forums.plex.tv/u/YOS92)\ **Post date:** [November 28, 2025, 9:12am UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/14 "2025-11-28T09:12:54Z")
yes it works with those options. thanks ---
**Author:** ![drzoidberg33](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/drzoidberg33/32/4184_2.png) [@drzoidberg33](https://forums.plex.tv/u/drzoidberg33)\ **Post date:** [November 28, 2025, 9:15am UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/15 "2025-11-28T09:15:12Z")
Great thanks! When PMS 1.43.0 goes public then this should also help prevent selecting these incorrect agents as those legacy ones will no longer be listed by default. ---
**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\ **Post date:** [February 26, 2026, 9:15am UTC](https://forums.plex.tv/t/issue-when-try-to-save-modification-on-library/933829/16 "2026-02-26T09:15:45Z")
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