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Fixed in 5.3.7



Found in


Issue ID




[CacheServer] Cache server fails to validate a prefab that is created automatically from script

Version Control


Steps to reproduce:

1. Open attached project
2. Delete the 'torus.prefab' asset
3. Connect the editor to a cache server (just launch the needed version of cache server and type 'localhost' in Unity Preferences/Cache Server)
4. Reimport 'torus.fbx' model
5. Observe the Editor's console, you can see that the prefab was reimported without any problems
6. Check the Project view, to see that the 'torus.prefab' was created and is placed along with the 'torus.fbx', in Assets folder
7. Switch active platform from Win/Mac/Linux to iOS (or any other platform)
8. Observe the Editor's console showing messages:

> reimporting torus.fbx
> CacheServer Asset validation failed 'Assets/torus.prefab'.
> File does not exist library/metadata/f4/f4a496ddd536b4eb694b5c609ab1a93c.tmp_cache

Note: Any additional platform switch will result in CacheServer's error.

Does not reproduce with 5.3.4p1

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  8. jamestinker

    Jun 16, 2020 12:08

    If your data changes frequently, you can still use the cache. The cache tool is designed to allow you to write cache update scripts and target specific parts of the cache. Source: - British Academic Writers.

  9. MaxLaTrobe

    Jan 31, 2020 06:40

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  10. kpdisney

    Jun 20, 2017 16:56

    Still seeing this exact error in 5.5.3 p2 when doing package imports from one project to another.

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