Traceback (most recent call last):

 "/Users/TK/.virtualenvs/test1/bin/ipython", line 11, in <module>
sys.exit(start_ipython())

 "/Users/TK/.virtualenvs/test1/lib/python2.7/site-packages/IPython/__init__.py", line 120, in start_ipython
return launch_new_instance(argv=argv, **kwargs)

 "/Users/TK/.virtualenvs/test1/lib/python2.7/site-packages/IPython/config/application.py", line 564, in launch_instance
app.start()

 "/Users/TK/.virtualenvs/test1/lib/python2.7/site-packages/IPython/terminal/ipapp.py", line 367, in start
return self.subapp.start()

 "/Users/TK/.virtualenvs/test1/lib/python2.7/site-packages/IPython/nbconvert/nbconvertapp.py", line 268, in start
self.convert_notebooks()

 "/Users/TK/.virtualenvs/test1/lib/python2.7/site-packages/IPython/nbconvert/nbconvertapp.py", line 311, in convert_notebooks
self.postprocessor(write_resultes)

 "/Users/TK/.virtualenvs/test1/lib/python2.7/site-packages/IPython/nbconvert/postprocessors/base.py", line 28, in __call__
self.postprocess(input)

 "/Users/TK/.virtualenvs/test1/lib/python2.7/site-packages/IPython/nbconvert/postprocessors/pdf.py", line 140, in postprocess
cont = self.run_latex(filename)

 "/Users/TK/.virtualenvs/test1/lib/python2.7/site-packages/IPython/nbconvert/postprocessors/pdf.py", line 104, in run_latex
self.latex_count, log_error)

 "/Users/TK/.virtualenvs/test1/lib/python2.7/site-packages/IPython/nbconvert/postprocessors/pdf.py", line 84, in run_command
p = subprocess.Popen(command, stdout=stdout, stdin=null)

 "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 710, in __init__
errread, errwrite)

 "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1327, in _execute_child
raise child_exceptionOSError: [Errno 2] No such file or directory
Traceback (most recent call last):

 "/usr/local/bin/bench", line 9, in <module>
load_entry_point('bench==0.1', 'console_scripts', 'bench')()

 "/home/dock/bench-repo/bench/cli.py", line 38, in cli
return bench()

 "/usr/local/lib/python2.7/dist-packages/click/core.py", line 610, in __call__
return self.main(*args, **kwargs)

 "/usr/local/lib/python2.7/dist-packages/click/core.py", line 590, in main
rv = self.invoke(ctx)

 "/usr/local/lib/python2.7/dist-packages/click/core.py", line 936, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))

 "/usr/local/lib/python2.7/dist-packages/click/core.py", line 782, in invoke
return ctx.invoke(self.callback, **ctx.params)

 "/usr/local/lib/python2.7/dist-packages/click/core.py", line 416, in invoke
return callback(*args, **kwargs)

 "/home/dock/bench-repo/bench/cli.py", line 106, in init
no_auto_update=no_auto_update, frappe_path=frappe_path, frappe_branch=frappe_branch)

 "/home/dock/bench-repo/bench/utils.py", line 53, in init
setup_backups(bench=path)

 "/home/dock/bench-repo/bench/utils.py", line 120, in setup_backups
logfile=os.path.join(get_bench_dir(bench=bench), 'logs', 'backup.log')))

 "/home/dock/bench-repo/bench/utils.py", line 123, in add_to_crontab
current_crontab = read_crontab()

 "/home/dock/bench-repo/bench/utils.py", line 131, in read_crontab
s = subprocess.Popen(["crontab", "-l"], stdin=subprocess.PIPE, stdout=subprocess.PIPE)

 "/usr/lib/python2.7/subprocess.py", line 679, in __init__
errread, errwrite)

 "/usr/lib/python2.7/subprocess.py", line 1259, in _execute_child
raise child_exceptionOSError: [Errno 2] No such file or directory