Fatal error: Call to undefined function date_is_repeat_field()

All I did was install the module and enable it and I got this error.

Fatal error: Call to undefined function date_is_repeat_field() in /home/drupalpro/websites/pcct/sites/all/modules/date_repeat_instance/date_repeat_instance.module on line 34 Call Stack: 0.0009 331732 1. {main}() /home/drupalpro/websites/pcct/index.php:0 3.8947 53643388 2. menu_execute_active_handler() /home/drupalpro/websites/pcct/index.php:21 3.9101 54610156 3. drupal_deliver_page() /home/drupalpro/websites/pcct/includes/menu.inc:532 3.9103 54610888 4. drupal_deliver_html_page() /home/drupalpro/websites/pcct/includes/common.inc:2544 4.2476 57255536 5. drupal_page_footer() /home/drupalpro/websites/pcct/includes/common.inc:2660 4.2662 57265820 6. system_run_automated_cron() /home/drupalpro/websites/pcct/includes/common.inc:2687 4.2663 57265908 7. drupal_cron_run() /home/drupalpro/websites/pcct/modules/system/system.module:3490 4.3431 57276668 8. module_invoke() /home/drupalpro/websites/pcct/includes/common.inc:5220 4.3432 57276956 9. call_user_func_array() /home/drupalpro/websites/pcct/includes/module.inc:833 4.3432 57277148 10. search_cron() /home/drupalpro/websites/pcct/includes/module.inc:0 4.3432 57278288 11. module_invoke() /home/drupalpro/websites/pcct/modules/search/search.module:363 4.3432 57278584 12. call_user_func_array() /home/drupalpro/websites/pcct/includes/module.inc:833 4.3432 57278776 13. node_update_index() /home/drupalpro/websites/pcct/includes/module.inc:0 4.3433 57280412 14. _node_index_node() /home/drupalpro/websites/pcct/modules/node/node.module:2665 4.4640 57339104 15. node_view() /home/drupalpro/websites/pcct/modules/node/node.module:2683 4.4641 57339104 16. node_build_content() /home/drupalpro/websites/pcct/modules/node/node.module:1284 4.4657 57346692 17. field_attach_view() /home/drupalpro/websites/pcct/modules/node/node.module:1368 4.4658 57347128 18. _field_invoke_default() /home/drupalpro/websites/pcct/modules/field/field.attach.inc:1181 4.4658 57347472 19. _field_invoke() /home/drupalpro/websites/pcct/modules/field/field.attach.inc:386 4.4663 57359928 20. field_default_view() /home/drupalpro/websites/pcct/modules/field/field.attach.inc:209 4.4664 57360908 21. date_field_formatter_view() /home/drupalpro/websites/pcct/modules/field/field.default.inc:210 4.4746 57371080 22. theme() /home/drupalpro/websites/pcct/sites/all/modules/date/date.field.inc:193 4.4758 57386652 23. theme_date_repeat_instance_date_display_combination() /home/drupalpro/websites/pcct/includes/theme.inc:1142 4.4758 57386752 24. theme_date_repeat_instance_wrapper() /home/drupalpro/websites/pcct/sites/all/modules/date_repeat_instance/date_repeat_instance.theme:26 4.4763 57387168 25. date_repeat_instance_access() /home/drupalpro/websites/pcct/sites/all/modules/date_repeat_instance/date_repeat_instance.theme:12