Upgrading to spyder 3.3.0, get_active_project_path error

[oldaccounttnuoccadlo]

Description

What steps will reproduce the problem?

I updated spyder using:
~$ conda update conda
~$ conda upgrade conda
~$ conda update spyder
~$ conda upgrade spyder

Then, launched anaconda:

~$ anaconda-navigator

Then, I clicked the gear above the launch spyder window and clicked update.

I launched spyder from inside anaconda-navigator, and this error occured.

Traceback

  File "/home/migillope/anaconda3/lib/python3.6/site-packages/spyder/app/mainwindow.py", line 1961, in valid_project
    if bool(self.projects.get_active_project_path()):
AttributeError: 'NoneType' object has no attribute 'get_active_project_path'

Versions

• Spyder version: 3.3.0
• Python version: 3.6.5
• Qt version: 5.9.4
• PyQt5 version: 5.9.2
• Operating System: Linux 4.15.0-24-generic

Dependencies

pyflakes >=0.6.0  :  1.6.0 (OK)
pycodestyle >=2.3 :  2.4.0 (OK)
pygments >=2.0    :  2.2.0 (OK)
sphinx >=0.6.6    :  1.7.4 (OK)
rope >=0.9.4      :  0.10.7 (OK)
jedi >=0.9.0      :  0.12.0 (OK)
psutil >=0.3      :  5.4.5 (OK)
nbconvert >=4.0   :  5.3.1 (OK)
pandas >=0.13.1   :  0.23.0 (OK)
numpy >=1.7       :  1.14.3 (OK)
sympy >=0.7.3     :  1.1.1 (OK)
cython >=0.21     :  0.28.2 (OK)
qtconsole >=4.2.0 :  4.3.1 (OK)
IPython >=4.0     :  6.4.0 (OK)
matplotlib >=2.0.0:  2.2.2 (OK)
pylint >=0.25     :  1.8.4 (OK)

[ccordoba12]

Thanks for reporting. This is a duplicate of #7403 and it'll be fixed in our next version.