Question The type or namespace name 'Words' could not be found

Updated to entities 0.17.0 preview 42 and i get this error:

Library\PackageCache\com.unity.entities@0.17.0-preview.42\Unity.Scenes\ResolveSceneReferenceSystem.cs(34,16): error CS0246: The type or namespace name 'Words' could not be found (are you missing a using directive or an assembly reference?)

Anyone has an idea how to fix this?

EDIT: apparently this error is because of my upgrade to collections 0.17

 

I had a very similar issue, and had a hell of a time trying to get it to work. The fix that worked for me was very simple though!


By clicking this button, you should be able to clear out all the packages (deleting the folders and changing the manifest wasn't working for me), and allow you to let the ECS packages load their dependencies. I had more success by adding the big DOTS packages first and letting the package manager do its thing than manually adding each one for whatever reason.

Sounds like you might have solved your problem, but thought I'd leave this here in case someone else comes along.

 

I got the same error. Had to downgrade to 0.15.0-preview.21 to keep working.

 

I fixed it by resetting Packages to default, and then installing Entities first (Entities Package automatically installs the other necessary dependencies like Burst, Mathematics etc)

 

Note the difference; Words struct does not exist in 0.17.0-preview.18 under same namespace. I found it moved here:
https://docs.unity3d.com/Packages/c.../Unity.Collections.LowLevel.Unsafe.Words.html

This is why entities@0.17 and collections >= 0.17 are not compatible

Adding

using Unity.Collections.LowLevel.Unsafe;

line there solves the issue.

 

It's been like this for quite some time, and that is a pretty easy fix it sounds like.. would be really nice if, you know, it was fixed.