Thanks, Jason, for looking into this.

The worksheet has 3595 lines of text when I click on edit, and no
attached files. I am not sure what you mean by typesetting, but I have
not checked the "Typeset" box. I do, however, use quite a few latex
equations in the html cells, and have a lot of plots. Everything works
fine when I restart the server and the problem does not occur at the
same point every time. I just re-opened it again and tried to
reproduce the problem. Everything worked fine until I got to the place
I last edited, which was a series of plot commands. The plot was still
there, but my additions to the code were missing. So I added a couple
of them again (feeling like in Groundhog day), did "Save and Quit", re-
opened the worksheet and was in the "processing math" loop again. No
error message in the terminal where I started the notebook server
from.
Interestingly, I still had the text version of the worksheet open in a
text editor from before and my edits are there!!
I just restarted the notebook server again, opened the same worksheet
and scrolled to the cell where I made the changes previously. The
changes were gone again. Clicked on edit, searched for the cell there,
and the changes were there! Returned to worksheet, clicked on
"Refresh" and lo and behold, the code cell showed the changes made
previously. This is Firefox 7.01 on Ubuntu 11.04 64-bit. It looks like
Firefox has a local copy of the worksheet stored somewhere and when I
evaluate the cells in this local copy, the worksheet is updated with
this old code and things go haywire.

Where do I find the javascript console? Please excuse my ignorance!

Cheers
Stan

On Oct 4, 12:58 pm, Jason Grout <jason-s...@creativetrax.com> wrote:

> One of your comments about the error you were getting when you tried to
> edit the raw html of the worksheet seemed to indicate (IIRC) that it was
> abnormally large.  Can you tell us about the size of the worksheet, any
> attached data files, etc.?  Can you give us an indication of how much
> typesetting is involved?  Does all of the text appear (without being
> typeset)?  Can you see where on the page the typesetting stops, and can
> you post the relevant formulas here?  Does your worksheet work on
> test.sagenb.org (which has been upgraded to mathjax, as well as many
> other upgrades)?  Are there any javascript errors noted in the
> javascript console?
>
> Thanks,
>
> Jason

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