Can not resole entities 0.0.12-preview.1 on mac with Unity 2018.1.0b12, entities 0.0.11 is ok on mac.
and 0.0.12-preview.1 is ok on windows.
Did I missing something?
Try to reimport all
Why are you still trying to use a beta version of 2018.1?
-edit-
i just realized this post was necroed. Why did you bring up a nearly 4 month old post.