# Blender crashes when started from the command line

I'd like to run Blender from the command line (like this) in Mac OS, but am running into an error which causes Blender to crash each time I run ./blender (from within /Applications/Blender/blender.app/Contents/MacOS):

Jamies-MBP:MacOS Jamie$./blender ndof: 3Dx driver not found Read new prefs: /Users/Jamie/Library/Application Support/Blender/2.74/config/userpref.blend found bundled python: /Applications/Blender/blender.app/Contents/MacOS/../Resources/2.74/python Fatal Python error: Py_Initialize: unable to load the file system codec File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/encodings/__init__.py", line 123 raise CodecRegistryError,\ ^ SyntaxError: invalid syntax Illegal instruction: 4  The OS also reports that 'Blender quit unexpectedly.' The error seems to suggest that Blender is looking for Python 2.7, but I thought Blender would always use its own copy of Python 3? If I run which python I get /usr/bin/python, and if I run which python3 I get /Library/Frameworks/Python.framework/Versions/3.5/bin/python3. If I run $PYTHONPATH the output looks like this:

-bash: /Library/Python/2.7/site-packages/pip-1.4.1-py2.7.egg:
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip:
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7:
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin:
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac:
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages:
/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python:
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk:
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old:
/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC:
/Library/Python/2.7/site-packages:
/Library/Python/2.7/site-packages/PIL: No such file or directory


I'm not sure whether this is typical or not (there seems to be an No such file or directory error but I don't know if that's related).

What should I do to fix this or investigate this further? Do I need to add python3 to my $PYTHONPATH? This answer mentions other variables, such as $BLENDER_SYSTEM_PYTHON – do I need to change this?

Well the solution for me was to unset my $PYTHONPATH, which was configured to create the output listed above by a line in my ~/.bash_profile file. When started from the Terminal, Blender now still loads the bundled Python: found bundled python: /Applications/Blender/blender.app/Contents/MacOS/../Resources/2.74/python  But Python is now able to load the modules it needs. I guess that having $PYTHONPATH set was preventing Blender's Python from being able to load required modules.