I decided to remove Civivolunteer. Administer > System Settings > Extensions. I disabled Civivolunteer and then Uninstall. Error message: "DB Error: constraint violation" The Civivolunteer extension cannot be enabled or uninstalled. What can I do?
Here is a paste of PART of the log where the error occurs
Aug 28 15:29:07 [info] $Fatal Error Details = Array ( [callback] => Array ( [0] => CRM_Core_Error [1] => handle )
[code] => -3
[message] => DB Error: constraint violation
[mode] => 16
[debug_info] => DELETE FROM `civicrm_uf_group` WHERE `name` = 'volunteer_sign_up' [nativecode=1451 ** Cannot delete or update a parent row: a foreign key constraint fails (`willycg_civicrm`.`civicrm_uf_join`, CONSTRAINT `FK_civicrm_uf_join_uf_group_id` FOREIGN KEY (`uf_group_id`) REFERENCES `civicrm_uf_group` (`id`))]
[type] => DB_Error
[user_info] => DELETE FROM `civicrm_uf_group` WHERE `name` = 'volunteer_sign_up' [nativecode=1451 ** Cannot delete or update a parent row: a foreign key constraint fails (`willycg_civicrm`.`civicrm_uf_join`, CONSTRAINT `FK_civicrm_uf_join_uf_group_id` FOREIGN KEY (`uf_group_id`) REFERENCES `civicrm_uf_group` (`id`))]
[to_string] => [db_error: message="DB Error: constraint violation" code=-3 mode=callback callback=CRM_Core_Error::handle prefix="" info="DELETE FROM `civicrm_uf_group` WHERE `name` = 'volunteer_sign_up' [nativecode=1451 ** Cannot delete or update a parent row: a foreign key constraint fails (`willycg_civicrm`.`civicrm_uf_join`, CONSTRAINT `FK_civicrm_uf_join_uf_group_id` FOREIGN KEY (`uf_group_id`) REFERENCES `civicrm_uf_group` (`id`))]"]
)
