Traceback error when attempting to add a reference or background image in 2.8 I'm at Level 3 - Part 1 of BlenderGuru's Beginner Tutorial for 2.8 and I'm receiving the following error when I attempt to add a reference image:

Traceback (most recent call last):
File "C:\Program Files\Blender Foundation\Blender\2.80\scripts\startup\bl_operators\object.py", line 918, in execute obj.data = image
AttributeError: 'NoneType' object has no attribute 'data'

location: &lt;unknown location&gt;:-1


I've tried uninstalling &amp; reinstalling Blender a couple of times and even updated and restarted my Macbook - nothing has worked.

I am able to add reference images to new files, but not the tutorial file I've been working on. I can't add background images to it either. 
Please help me fix this.
Just had this same problem.
I was trying to add the image to a hidden collection.
Adding to an unhidden collection gave me the reference.