Bunch of warnings for .meta inconsistency after package update in Unity 2019.2.12f1 HDRP, how do I fix that?

Questions & Answers
1

Since I upgraded HDRP, Shader Graph and Core RP Library from the Package Manager, everytime the assets database is refreshed Unity logs the following warnings:

  1. A meta data file (.meta) exists but its asset 'Packages/com.unity.visualeffectgraph/Editor/Models/Contexts/Implementations/HDRP' can't be found. When moving or deleting files outside of Unity, please ensure that the corresponding .meta file is moved or deleted along with it.
  2. Removing Packages/com.unity.visualeffectgraph/Editor/Models/Contexts/Implementations/HDRP because the asset does not exist
  3. Couldn't delete Packages/com.unity.visualeffectgraph/Editor/Models/Contexts/Implementations/HDRP because it's in an immutable folder.

I didn’t remove anything manually.
I checked if the folder can be found by using Windows Explorer but it’s not there, specifically:
there is a

Packages/com.unity.visualeffectgraph/Editor/
folder but it only contains

Resources/uxml/

What I’ve already tried (on isolated branch copies of the same project):

  • deleting com.unity.visualeffectgraph
  • manually deleting local package cache
  • removing HDRP and installing it again (that caused also vfxGraph to be removed and added again)
  • deleting .csproj files (useless, wasn’t it?)
  • search for any .meta file related to the vfxgraph to delete it but I couldn’t find anything

None of these solutions worked.

I’m sure there’s an easy solution for this I’m missing out, I hope someone out there can help me with this

2

I’ve also started getting these errors in Unity 2019.2.17f1 after upgrading to HDRP.

I’ve found a bandaid solution:

In Windows, navigate to your project folder, and find this location within it:

\Library\PackageCache\com.unity.visualeffectgraph@6.9.2-preview\Editor\Models\Contexts\Implementations

Then delete the ‘HDRP.meta’ file.

This stops the errors for this session. But Unity will create a new meta file when you start the program again, so you have to delete it every time.

3

You can actually avoid this problem totally, but this solution might have some issues in future versions.

Simply create empty folder named “HDRP” near this HDRP.meta file in path “\Library\PackageCache\com.unity.visualeffectgraph@6.9.2-preview\Editor\Models\Contexts\Implementations” and deny all rights for everyone for this folder.

Example of how this can be done in windows is here How to Create Undeletable Folders in Windows 10 - Make Tech Easier

After this unity will not delete this folder on launch and there will be no more warning messages.

Sorry for my English.

4

I suggest you go to Window > Package Manager in the tool, look for this extension and remove it. If you need it, try removing and reinstalling