Issues

If, for some reason, you cannot activate or deactivate an additional asset and/or see errors in your Editor, you can activate or deactivate assets using "Project Settings":

1

Go to File > Build Settings > Player Settings

2

Find "Script Compilation" section in the "Project Settings".

3

Add or remove row from the table that correspond to additional asset.

4

Press "Apply" button.

5

After the scripts in your project are recompiled, you can continue to use the asset.