System Information
Operating system: Linux - Ubuntu 18.04
Graphics card:GeForce GTX 1050 Ti

Blender Version
Broken:
(example: 2.79b release)
(example: 2.80, 8c620c8e2b3, blender2.8, 2018-12-02, as found on the splash screen)
Worked: (optional)

Short description of error

Create new scene
Delete default light and cube
Save - exit
Start Blender
Open saved scene
Add point lamp
Select In object panel

Terminal window shows:

Traceback (most recent call last):

File "/programs/Blender_2.8/2.80/scripts/addons/cycles/ui.py", line 1126, in poll
  if ob.dupli_type == 'COLLECTION' and ob.dupli_group:

AttributeError: 'Object' object has no attribute 'dupli_type'

location: <unknown location>:-1

location: <unknown location>:-1

Thjis repeats a bunch of times in the terminal window.