Unable to make a build

Hi guys has anyone encountered this error before:
An asset is marked with HideFlags.DontSave but is included in the build:
Asset: 'Library/unity editor resources'
Asset name: Lucida Grande Warning
(You are probably referencing internal Unity data in your build.)
I have already checked all my NGUI labels and they do not reference that font anymore
Also doing a search with Resource.FindAllObjectsOfType() and checking if they had the HideFlags.DontSave returns a list of 0 objects

The same error shows up for the following asset name as well:
Font Material
Font Texture
Lucida Grande small bold
Lucida Grande small
Lucida Grande

This is happening with Unity Versions
2017.1.0f3
2017.1.1.p1
5.6.3.p2

 

I have this same problem.
It's kind of sad that this never got answered

 

You should send report via Unity Bug Report.
And when Unity comes back to you, post it back here.

 

Try deleting your library and then letting it get rebuilt.