WeBWorK error An error occured while processing your request. For help, please send mail to this site's webmaster (root@localhost), including all of the following information as well as what what you were doing when the error occured. Wed Feb 16 21:13:52 2011 Warning messages defined(%hash) is deprecated at /opt/webwork/pg/lib/Value/AnswerChecker.pm line 1566. (Maybe you should just omit the defined()?) DBD::mysql::db selectall_arrayref failed: Table 'webwork.depths' doesn't exist at /opt/webwork/pg/lib/WeBWorK/PG/ImageGenerator.pm line 435. Error messages Can't use an undefined value as an ARRAY reference at /opt/webwork/pg/lib/WeBWorK/PG/ImageGenerator.pm line 436. 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 231 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 491 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator.pm in WeBWorK::ContentGenerator::content called at line 195 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator.pm in WeBWorK::ContentGenerator::go called at line 353 of /opt/webwork/webwork2/lib/WeBWorK.pm