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Extending pangs answer a little:

Make notebook start again

If you have valuable information in your /home/sage/.sage/sage_notebook.sagenb/ folder, try to just erasing/renaming:

  • /home/sage/.sage/sage_notebook.sagenb/conf.pickle
  • /home/sage/.sage/sage_notebook.sagenb/user.pickle

Recover information

If you lost information, look for snapshots of your notebook: /home/sage/.sage/sage_notebook.sagenb/user.pickle/home/<user>/<notebook id>/snapshots/

  • Unpack latest snapshot
  • Copy contents of file
  • Edit notebook in browser in plain text mode
  • Paste the contents.
  • Press save

Maybe there's an easier way, but I haven't found it yet..

click to hide/show revision 2
Used wrong name for worksheets

Extending pangs answer a little:

Make notebook start again

If you have valuable information in your /home/sage/.sage/sage_notebook.sagenb/ folder, try to just erasing/renaming:

  • /home/sage/.sage/sage_notebook.sagenb/conf.pickle
  • /home/sage/.sage/sage_notebook.sagenb/user.pickle

Recover information worksheet

If you lost information, look for snapshots of your notebook: worksheet in: /home/sage/.sage/sage_notebook.sagenb/user.pickle/home/<user>/<notebook /home/sage/.sage/sage_notebook.sagenb/user.pickle/home/<user>/<worksheet id>/snapshots/

  • Unpack latest snapshot
  • Copy contents of file
  • Edit notebook worksheet in browser in plain text mode
  • Paste the contents.
  • Press save

Maybe there's an easier way, but I haven't found it yet..

Extending pangs answer a little:This might or might not work for you. When I had problems with unpickling this worked for me.

Make notebook start again

If you have valuable information in your /home/sage/.sage/sage_notebook.sagenb/ folder, try to just erasing/renaming:

  • /home/sage/.sage/sage_notebook.sagenb/conf.pickle
  • /home/sage/.sage/sage_notebook.sagenb/user.pickle

Recover worksheet

If you lost information, look for snapshots of your worksheet in: /home/sage/.sage/sage_notebook.sagenb/user.pickle/home/<user>/<worksheet id>/snapshots/

  • Unpack latest snapshot
  • Copy contents of file
  • Edit worksheet in browser in plain text mode
  • Paste the contents.
  • Press save

Maybe there's an easier way, but I haven't found it yet..