when restoring a course from a backup file, it fails with the following error:
—
the table "question_match" doesn't exist
Debug info:
Error code: ddltablenotexist
Stack trace:
line 554 of /lib/dml/moodle_database.php: dml_exception thrown
line 1579 of /lib/dml/moodle_database.php: call to moodle_database->where_clause()
line 197 of /question/type/ddmatch/backup/moodle2/restore_qtype_ddmatch_plugin.class.php: call to moodle_database->set_field()
line 84 of /backup/moodle2/restore_plugin.class.php: call to restore_qtype_ddmatch_plugin->after_execute_question()
line 362 of /backup/util/plan/restore_structure_step.class.php: call to restore_plugin->launch_after_execute_methods()
line 108 of /backup/util/plan/restore_structure_step.class.php: call to restore_structure_step->launch_after_execute_methods()
line 153 of /backup/util/plan/base_task.class.php: call to restore_structure_step->execute()
line 163 of /backup/util/plan/base_plan.class.php: call to base_task->execute()
line 157 of /backup/util/plan/restore_plan.class.php: call to base_plan->execute()
line 315 of /backup/controller/restore_controller.class.php: call to restore_plan->execute()
line 147 of /backup/util/ui/restore_ui.class.php: call to restore_controller->execute_plan()
line 46 of /backup/restore.php: call to restore_ui->execute()
—
we recently upgraded from 2.3 to 2.5 (it was OK in 2.3) Apparently the restore script calls to the old mdl_question_match table, instead of mdl_qtype_match_options

we have the following extra question types installed:
qtype_conceptmap
qtype_ddimageortext
qtype_ddmarker
qtype_ddmatch
qtype_ddwtos
qtype_gapselect
qtype_order
qtype_oumultiresponse
qtype_pmatch

Apart from this, all standard and extra questions are working correctly in 2.5