I have just managed to install ubuntu and then sage a few days ago. Therefore I am an absolute beginner.
When I was using sage, due to external power issues, the computer suddenly switched off and after that, I am unable to open sage notebook. Its showing an error.
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| Sage Version 4.6.2, Release Date: 2011-02-25 |
| Type notebook() for the GUI, and license() for information. |
sage: notebook()
The notebook files are stored in: sage_notebook.sagenb
ValueError Traceback (most recent call last)
/home/bhavanishankar/.sage/<ipython console=""> in <module>()
/home/bhavanishankar/Applications/sage-4.6.2-linux-64bit-ubuntu_10.04.1_lts-x86_64-Linux/devel/sagenb/sagenb/notebook/notebook_object.pyc in __call__(self, args, *kwds) 215 """ 216 def __call__(self, args, *kwds): --> 217 return self.notebook(args, *kwds) 218 219 notebook = run_notebook.notebook_twisted
/home/bhavanishankar/Applications/sage-4.6.2-linux-64bit-ubuntu_10.04.1_lts-x86_64-Linux/devel/sagenb/sagenb/notebook/run_notebook.pyc in notebook_twisted(self, directory, port, interface, address, port_tries, secure, reset, accounts, require_login, server_pool, ulimit, timeout, open_viewer, sagetex_path, start_path, fork, quiet, subnets) 403 if open_viewer: 404 "Open viewer automatically isn't fully implemented. You have to manually open your web browser to the above URL." --> 405 return run(port, subnets) 406 407
/home/bhavanishankar/Applications/sage-4.6.2-linux-64bit-ubuntu_10.04.1_lts-x86_64-Linux/devel/sagenb/sagenb/notebook/run_notebook.pyc in run(port, subnets) 366 checkPID(pidfile) 367 except SystemExit as e: --> 368 pid = int(open(pidfile).read()) 369 if str(e).startswith('Another twistd server is running,'): 370 sys.exit("""\
ValueError: invalid literal for int() with base 10: ''
""
