Undefined index: glossary

Backtrace
PapayaMessageHookErrors->handle() {PAPAYA_INCLUDE_PATH}/modules/commercial/glossary/datafilter_glossary.php:103
datafilter_glossary->callbackGlossaryCombo() {PAPAYA_INCLUDE_PATH}/system/base_dialog.php:908
base_dialog->getDlgElement() {PAPAYA_INCLUDE_PATH}/system/base_dialog.php:413
base_dialog->getDialogXML() {PAPAYA_INCLUDE_PATH}/system/base_datafilter.php:50
base_datafilter->getDialog() {PAPAYA_INCLUDE_PATH}/system/base_plugin.php:340
base_plugin->getForm() {PAPAYA_INCLUDE_PATH}/system/papaya_datafilter_list.php:233
papaya_datafilter_list->executeFilterLinkEdit() {PAPAYA_INCLUDE_PATH}/system/papaya_datafilter_list.php:163
papaya_datafilter_list->execute() {PAPAYA_INCLUDE_PATH}/system/base_viewlist.php:392
base_viewlist->execute() {DOCUMENT_ROOT}/papaya/views.php:39