A scripted object (probably UnityEngine.Timeline.ControlTrack?) has a different serialization layout

[Januaryz]

unity version: 2020.3.8f1
platform: iOS

We pack Timeline into AssetBundle and load it during game. However, some Timelines are not played, and errors are reported through the log:

A scripted object (probably UnityEngine.Timeline.ControlTrack?) has a different serialization layout when loading. (Read 52 bytes but expected 420 bytes) Did you #ifdef UNITY_EDITOR a section of your serialized properties in any of your scripts?

A scripted object (probably UnityEngine.Timeline.ControlPlayableAsset?) has a different serialization layout when loading. (Read 52 bytes but expected 120 bytes) Did you #ifdef UNITY_EDITOR a section of your serialized properties in any of your scripts?

Has anyone encountered the same problem and how can this be solved?

[shaojingliu]

build by il2cpp mode, add “Assets/link.xml” file, content:

[y-iwanaga]

I encountered a similar issue with Unity2022.3.16f1.
And I was able to solve the issue using the workaround shown by shaojinglui-san.
Thank you.

[josefgrunig]

Same here on Unity 2022.3.16f1 with following errors:

The referenced script (UnityEngine.Timeline.AudioTrack) on this Behaviour is missing!
and
A scripted object (probably UnityEngine.Timeline.AudioTrack?) has a different serialization layout when loading. (Read 44 bytes but expected 752 bytes)

Fixed using the suggestion by @shaojingliu