Oh wonderful, thank you! On Feb 7, 12:41 pm, Jason Grout <[email protected]> wrote: > On 2/7/12 11:04 AM, Gwyn wrote: > > > > > > > > > > > I've been using Sage as part of an abstract algebra class. The two > > sample worksheet I've been running are: > > >http://www.sagenb.org/home/pub/4099/ > >http://www.sagenb.org/home/pub/4100/ > > > In these, and other worksheets I've created to try and troubleshoot, > > I'm experiencing the following problem. When evaluating cells (either > > via the "Action" dropdown menu --> "Evaluate All" or individually) the > > output of the cell is being computed and stored, but not displayed in > > the Notebook window. In many instances, I can correct this by > > reloading the worksheet -- but this doesn't work, for example, with > > cells using "@interact". > > > I know the output is being stored by examining the "Edit" button's > > text version of the worksheet, but I don't know how to correct this > > problem. I've tried: > > > 1. Creating copies of the worksheets involved and running those. > > 2. Creating new worksheets and trying commands there. > > 3. Creating a new username and performing both 1. and 2. under my new > > username. > > 4. Running in different browsers (so far, Firefox, Internet Explorer, > > and Chrome,) all of which produce the same error. > > > These worksheets (and others) work fine when I'm running Sage from my > > own computer [MacOSX, Sage Version 4.7, Release Date: 2011-05-23] in > > the same browsers. However, they are all failing in the Sagenb Server > > ['Sage Version 4.7.2, Release Date: 2011-10-29'] > > > I don't know yet if my students are going to experience the same > > problems. I can maybe muddle through for one more class [and just > > tell them to reload their worksheet every time they run a cell, ugh] > > but I don't know if there's something I can do to fix this on my end, > > or if it's a problem with the Notebook Server. Any suggestions? > > As I mentioned in the other thread by you, I replicated this problem, > confirmed that there were errors in the server log [1], and restarted > the server. That fixed the problem with display output. > > -Jason > > [1] For those interested, the errors were like this: > > File > "/sagenb/sage_install/sage-4.7.2/devel/sagenb/flask_version/worksheet.py", > line 455, in worksheet_cell_update > g.notebook.add_to_user_history(H, g.username) File > "/sagenb/sage_install/sage-4.7.2/devel/sagenb-git/sagenb/notebook/notebook.py", > line 710, in add_to_user_history > history = self.user_history(username) File > "/sagenb/sage_install/sage-4.7.2/devel/sagenb-git/sagenb/notebook/notebook.py", > line 690, in user_history return self._user_history[username] > exceptions.KeyError: u'jasontest' > > The errors started yesterday, and there were lots of these errors.
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