Spyder wont start unless file ".spyderproject" is deleted. UnpicklingError

[MakGre]

Description of your problem

What steps will reproduce the problem?

1. python spyder --reset, uninstall and reinstall via Ubuntu Software Center
2. create spyder workspace in empty directory "~/workspace/"
3. create new Project called "Mixture_Model"
4. close spyder
5. start spyder (via Ubuntu launcher), startup fails, spyder crashes
6. after deleting "~/workspace/Mixture_Model/.spyderproject" spyder starts, automatically recreates the .spyderproject file
7. after closing spyder, same behavior as in step 5

What is the expected output? What do you see instead?

Expected spyder to start, instead it crashed

Please provide any additional information below

Repeating the exact same procedure but with project name "A" results in no crash, but normal startup.

content of spyder_crash.log

Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/spyderlib/spyder.py", line 2152, in main
mainwindow = run_spyder(app, options, args)
File "/usr/lib/python2.7/dist-packages/spyderlib/spyder.py", line 2047, in run_spyder
main.setup()
File "/usr/lib/python2.7/dist-packages/spyderlib/spyder.py", line 793, in setup
self.projectexplorer = ProjectExplorer(self)
File "/usr/lib/python2.7/dist-packages/spyderlib/plugins/projectexplorer.py", line 37, in init
self.load_config()
File "/usr/lib/python2.7/dist-packages/spyderlib/plugins/projectexplorer.py", line 137, in load_config
self.set_workspace(self.get_option('workspace', None))
File "/usr/lib/python2.7/dist-packages/spyderlib/widgets/projectexplorer.py", line 1296, in set_workspace
self.treewidget.set_workspace(path)
File "/usr/lib/python2.7/dist-packages/spyderlib/widgets/projectexplorer.py", line 696, in set_workspace
self.workspace.set_root_path(root_path)
File "/usr/lib/python2.7/dist-packages/spyderlib/widgets/projectexplorer.py", line 278, in set_root_path
self.load()
File "/usr/lib/python2.7/dist-packages/spyderlib/widgets/projectexplorer.py", line 307, in load
setattr(self, attr, data[attr])
File "/usr/lib/python2.7/dist-packages/spyderlib/widgets/projectexplorer.py", line 257, in _set_project_paths
self.add_project(root_path)
File "/usr/lib/python2.7/dist-packages/spyderlib/widgets/projectexplorer.py", line 382, in add_project
project.set_root_path(root_path)
File "/usr/lib/python2.7/dist-packages/spyderlib/widgets/projectexplorer.py", line 86, in set_root_path
self.load()
File "/usr/lib/python2.7/dist-packages/spyderlib/widgets/projectexplorer.py", line 125, in load
data = cPickle.loads(fdesc.read())
UnpicklingError: unpickling stack underflow

Versions and main components

• Spyder Version: v2.2.5+dfsg from Ubuntu Software Center
• Python Version: 2.7.6
• Operating system: ubuntu 14.04 LTS (latest updates as of August 19, 2016)

Dependencies

Please go to the menu entry Help > Optional Dependencies (or
Help > Dependencies), press the button Copy to clipboard
and paste the contents below:

IPython >=0.13 : 1.2.1 (OK)
matplotlib >=1.0: 1.3.1 (OK)
pep8 >=0.6 : 1.4.6 (OK)
pyflakes >=0.5.0: 0.8.1 (OK)
pylint >=0.25 : 1.1.0 (OK)
rope >=0.9.2 : 0.9.2 (OK)
sphinx >=0.6.6 : 1.2.2 (OK)
sympy >=0.7.0 : None (NOK)

[ccordoba12]

This will be solved in Spyder 3.0, thanks for reporting.