I am having a similar problem when backing up a new course in Moodle 2.2.3 and restoring it to a new course, the following error is displayed: Error writing to database Error writing to database More information about this error Debug info: Duplicate entry '10010150' for key 'mdl_subpsect_sec_uix' INSERT INTO mdl_subpage_sections (sectionid,pageorder,stealth,subpageid) VALUES(?,?,?,?) [array ( 0 => 10010150, 1 => '1', 2 => '0', 3 => 2576, )] Stack trace: line 397 of /lib/dml/moodle_database.php: dml_write_exception thrown line 893 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end() line 935 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw() line 72 of /mod/subpage/backup/moodle2/restore_subpage_stepslib.php: call to mysqli_native_moodle_database->insert_record() line 131 of /backup/util/plan/restore_structure_step.class.php: call to restore_subpage_activity_structure_step->process_subpage_sections() line 103 of /backup/util/helper/restore_structure_parser_processor.class.php: call to restore_structure_step->process() line 125 of /backup/util/xml/parser/processors/grouped_parser_processor.class.php: call to restore_structure_parser_processor->dispatch_chunk() line 91 of /backup/util/helper/restore_structure_parser_processor.class.php: call to grouped_parser_processor->postprocess_chunk() line 148 of /backup/util/xml/parser/processors/simplified_parser_processor.class.php: call to restore_structure_parser_processor->postprocess_chunk() line 92 of /backup/util/xml/parser/processors/progressive_parser_processor.class.php: call to simplified_parser_processor->process_chunk() line 169 of /backup/util/xml/parser/progressive_parser.class.php: call to progressive_parser_processor->receive_chunk() line 253 of /backup/util/xml/parser/progressive_parser.class.php: call to progressive_parser->publish() line ? of unknownfile: call to progressive_parser->end_tag() line 158 of /backup/util/xml/parser/progressive_parser.class.php: call to xml_parse() line 137 of /backup/util/xml/parser/progressive_parser.class.php: call to progressive_parser->parse() line 105 of /backup/util/plan/restore_structure_step.class.php: call to progressive_parser->process() line 153 of /backup/util/plan/base_task.class.php: call to restore_structure_step->execute() line 187 of /backup/moodle2/restore_activity_task.class.php: call to base_task->execute() line 148 of /backup/util/plan/base_plan.class.php: call to restore_activity_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() Output buffer:
- line 1361 of /backup/moodle2/restore_stepslib.php: call to debugging()
- line 131 of /backup/util/plan/restore_structure_step.class.php: call to restore_enrolments_structure_step- >process_enrol()
- line 103 of /backup/util/helper/restore_structure_parser_processor.class.php: call to restore_structure_step->process()
- line 125 of /backup/util/xml/parser/processors/grouped_parser_processor.class.php: call to restore_structure_parser_processor->dispatch_chunk()
- line 91 of /backup/util/helper/restore_structure_parser_processor.class.php: call to grouped_parser_processor->postprocess_chunk()
- line 148 of /backup/util/xml/parser/processors/simplified_parser_processor.class.php: call to restore_structure_parser_processor->postprocess_chunk()
- line 92 of /backup/util/xml/parser/processors/progressive_parser_processor.class.php: call to simplified_parser_processor->process_chunk()
- line 169 of /backup/util/xml/parser/progressive_parser.class.php: call to progressive_parser_processor->receive_chunk()
- line 253 of /backup/util/xml/parser/progressive_parser.class.php: call to progressive_parser->publish()
- line ? of unknownfile: call to progressive_parser->end_tag()
- line 158 of /backup/util/xml/parser/progressive_parser.class.php: call to xml_parse()
- line 137 of /backup/util/xml/parser/progressive_parser.class.php: call to progressive_parser->parse()
- line 105 of /backup/util/plan/restore_structure_step.class.php: call to progressive_parser->process()
- line 153 of /backup/util/plan/base_task.class.php: call to restore_structure_step->execute()
- line 148 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()