** Using WeBWorK **

Hello,

I am running into the following error message when I change the display options from jsMath to images

Warning messages

• DBD::mysql::db selectall_arrayref failed: Table 'webwork.depths' doesn't exist at /opt/webwork/pg/lib/WeBWorK/PG/ImageGenerator.pm line 433.

Error messages

Can't use an undefined value as an ARRAY reference at /opt/webwork/pg/lib/WeBWorK/PG/ImageGenerator.pm line 434.


Call stack

The information below can help locate the source of the problem.

• in WeBWorK::PG::Local::new called at line 52 of /opt/webwork/webwork2/lib/WeBWorK/PG.pm
• in WeBWorK::PG::new called at line 242 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator/ProblemSet.pm
• in WeBWorK::ContentGenerator::ProblemSet::info called at line 152 of /opt/webwork/webwork2/lib/WeBWorK/Template.pm
• in WeBWorK::Template::template called at line 480 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator.pm
• in WeBWorK::ContentGenerator::content called at line 188 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator.pm
• in WeBWorK::ContentGenerator::go called at line 338 of /opt/webwork/webwork2/lib/WeBWorK.pm

I have changed the setting $WeBWorK::PG::ImageGenerator::PreserveTempFiles to 1 (in webwork2/lib/WeBWorK/Constants.pm). but that did not seem to solve the problem.

Any help would be greatly appreciated.

On a different note but related to the reason why I need "images" to work, my students cannot properly view the mathematical equations with Internet Explorer (the default display mode is jsMath). I use FireFox and do not run into any problems. What kind of funny things could be happening?

Regards,
Marie-Claude