GameObjectLocalizer could not be found (Localization 1.0.0-pre.10)

Hi guys. I'm using Unity 2020.2.5f1 and I've installed the Localization package from the Package Manager, excatly how the documentation says so ("To install the package in a version before 2021.2, type in com.unity.localization under “Add package from git URL” in the Package Manager."). However, once it finished installing this error popped up in the console:

Library\PackageCache\com.unity.localization@1.0.0-pre.10\Editor\UI\DrivenPropertyDrawer.cs(35,66): error CS0246: The type or namespace name 'GameObjectLocalizer' could not be found (are you missing a using directive or an assembly reference?)

Could someone help me with this error? All of the dependencies were installed correctly

 

@karl_jones I've rolled back to 1.0.0-pre.9, but I've got a batch of errors when I entered Play Mode (all I've done is adding a TMP UI text - same problem occurs when I try a normal text - and the LocalizeStringEvent script, with only 1 string table and 2 languages - all just to test it quickly the package), the errors are in the image below.

I've also tried the solution you gave in this forum and it didn't worked out https://forum.unity.com/threads/selectlocale-is-null-1-0-0-pre-10.1147190/#post-7364354

 

I've tried that before posting and it still spitted the errors. I'll try go to 2020.3 and see if it changes anything

 

I'm sending a copy of the project (just deleting some stuff I wasn't using, like empty folders and scripts). Btw, for some reason when I opened the copy project to delete those things and entered play mode for the first time it worked (although everytime after that the errors appeared)

https://drive.google.com/file/d/1Of0W_UrOx735r5oT7ONX3PPI6AeXjgTw/view?usp=sharing