Following error message displayed pgAdmin4.py when user done latest git pull for pgAdmin4 on Ubuntu 14.04 64 bit: ------------- python pgAdmin4.py Traceback (most recent call last): File "pgAdmin4.py", line 56, in <module> app = create_app() File "/home/fahar/Projects/pgadmin4/web/pgadmin/__init__.py", line 223, in create_app app.register_blueprint(module) File "/home/fahar/venv/lib/python3.4/site-packages/flask/app.py", line 62, in wrapper_func return f(self, *args, **kwargs) File "/home/fahar/venv/lib/python3.4/site-packages/flask/app.py", line 889, in register_blueprint blueprint.register(self, options, first_registration) File "/home/fahar/Projects/pgadmin4/web/pgadmin/utils/__init__.py", line 55, in register self.submodules = list(app.find_submodules(self.import_name)) File "/home/fahar/Projects/pgadmin4/web/pgadmin/__init__.py", line 44, in find_submodules module = import_module(module_name) File "/home/fahar/venv/lib/python3.4/importlib/__init__.py", line 109, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 2254, in _gcd_import File "<frozen importlib._bootstrap>", line 2237, in _find_and_load File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked File "<frozen importlib._bootstrap>", line 1129, in _exec File "<frozen importlib._bootstrap>", line 1471, in exec_module File "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed File "/home/fahar/Projects/pgadmin4/web/pgadmin/misc/bgprocess/__init__.py", line 21, in <module> from .processes import BatchProcess File "/home/fahar/Projects/pgadmin4/web/pgadmin/misc/bgprocess/processes.py", line 35, in <module> from cStringIO import StringIO ImportError: No module named 'cStringIO'