## WeBWorK Problems

### pop up list example problem

by Helena Verrill -
Number of replies: 1
I'm having a go at using pop ups, following the example at:
http://math.webwork.rochester.edu/docs/docs/pglanguage/tutorial/popuplist.html

This generally works fine, except even with exactly the example as above
cut and paste to my templates directory, so it's on the local problems set,
when I try the problem, (click "try it") and then click the "check answers" button, I get a message:

• cd /opt/webwork/webwork2/tmp/ImageGenerator.XwevWkbH && /usr/bin/latex equation > latex.out 2> latex.err failed to generate a DVI file at /opt/webwork/pg/lib/WeBWorK/PG/ImageGenerator.pm line 356.
• cd /opt/webwork/webwork2/tmp/ImageGenerator.XwevWkbH && /usr/bin/dvipng -bgTransparent -D120 -q -depth equation > dvipng.out 2> dvipng.err returned non-zero status 256: No such file or directory at /opt/webwork/pg/lib/WeBWorK/PG/ImageGenerator.pm line 362.
Not sure if this is something I need to worry about - it seems otherwise the problem looks fine, but it would be nice if it was possible to not have this message.

Thanks,
Helena