Cannot Delete Custom Field gives DB Error: not found

[asanka]

I installed civicrm 4.4.10 in joomla 3.3.6 . i created some custom fields and it's ok. but when i try to delete the custom field it gives DB error.
following is debug. PLEASE HELPPPP


#0 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/Error.php(149): CRM_Core_Error::backtrace()
#1 [internal function](): CRM_Core_Error::handle(Object(DB_Error))
#2 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/packages/PEAR.php(931): call_user_func((Array:2), Object(DB_Error))
#3 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/packages/DB.php(969): PEAR_Error->PEAR_Error("DB Error: not found", -4, 16, (Array:2), "        ALTER TABLE civicrm_value_pefaa_1 DROP COLUMN `date_of_birth_1` [nati...")
#4 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/packages/PEAR.php(564): DB_Error->DB_Error(-4, 16, (Array:2), "        ALTER TABLE civicrm_value_pefaa_1 DROP COLUMN `date_of_birth_1` [nati...")
#5 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/packages/DB/common.php(1905): PEAR->raiseError(NULL, -4, NULL, NULL, "        ALTER TABLE civicrm_value_pefaa_1 DROP COLUMN `date_of_birth_1` [nati...", "DB_Error", TRUE)
#6 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/packages/DB/mysql.php(898): DB_common->raiseError(-4, NULL, NULL, NULL, "1091 ** Can't DROP 'date_of_birth_1'; check that column/key exists")
#7 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/packages/DB/mysql.php(327): DB_mysql->mysqlRaiseError()
#8 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/packages/DB/common.php(1216): DB_mysql->simpleQuery("        ALTER TABLE civicrm_value_pefaa_1 DROP COLUMN `date_of_birth_1`")
#9 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/packages/DB/DataObject.php(2434): DB_common->query("        ALTER TABLE civicrm_value_pefaa_1 DROP COLUMN `date_of_birth_1`")
#10 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/packages/DB/DataObject.php(1626): DB_DataObject->_query("        ALTER TABLE civicrm_value_pefaa_1 DROP COLUMN `date_of_birth_1`")
#11 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/DAO.php(160): DB_DataObject->query("        ALTER TABLE civicrm_value_pefaa_1 DROP COLUMN `date_of_birth_1`")
#12 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/DAO.php(908): CRM_Core_DAO->query("        ALTER TABLE civicrm_value_pefaa_1 DROP COLUMN `date_of_birth_1`", FALSE)
#13 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/BAO/SchemaHandler.php(293): CRM_Core_DAO::executeQuery("        ALTER TABLE civicrm_value_pefaa_1 DROP COLUMN `date_of_birth_1`", (Array:0), TRUE, NULL, FALSE, FALSE)
#14 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/BAO/CustomField.php(1877): CRM_Core_BAO_SchemaHandler::alterFieldSQL((Array:7), FALSE, TRUE)
#15 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/BAO/CustomField.php(1121): CRM_Core_BAO_CustomField::createField(Object(CRM_Core_DAO_CustomField), "delete")
#16 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Custom/Form/DeleteField.php(114): CRM_Core_BAO_CustomField::deleteField(Object(CRM_Core_DAO_CustomField))
#17 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/Form.php(261): CRM_Custom_Form_DeleteField->postProcess()
#18 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/StateMachine.php(160): CRM_Core_Form->mainProcess()
#19 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/QuickForm/Action/Next.php(60): CRM_Core_StateMachine->perform(Object(CRM_Custom_Form_DeleteField), "next", "Next")
#20 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/packages/HTML/QuickForm/Controller.php(203): CRM_Core_QuickForm_Action_Next->perform(Object(CRM_Custom_Form_DeleteField), "next")
#21 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/packages/HTML/QuickForm/Page.php(103): HTML_QuickForm_Controller->handle(Object(CRM_Custom_Form_DeleteField), "next")
#22 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/Controller.php(339): HTML_QuickForm_Page->handle("next")
#23 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Custom/Page/Field.php(255): CRM_Core_Controller->run()
#24 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/Invoke.php(323): CRM_Custom_Page_Field->run((Array:5), NULL)
#25 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/Invoke.php(72): CRM_Core_Invoke::runItem((Array:14))
#26 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm/CRM/Core/Invoke.php(52): CRM_Core_Invoke::_invoke((Array:5))
#27 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm.php(116): CRM_Core_Invoke::invoke((Array:5))
#28 /www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civicrm.php(40): civicrm_invoke()
#29 /www/data/web/eng/old/eeu/webpefaa/libraries/cms/component/helper.php(352): require_once("/www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civic...")
#30 /www/data/web/eng/old/eeu/webpefaa/libraries/cms/component/helper.php(332): JComponentHelper::executeComponent("/www/data/web/eng/old/eeu/webpefaa/administrator/components/com_civicrm/civic...")
#31 /www/data/web/eng/old/eeu/webpefaa/libraries/cms/application/administrator.php(98): JComponentHelper::renderComponent("com_civicrm")
#32 /www/data/web/eng/old/eeu/webpefaa/libraries/cms/application/administrator.php(159): JApplicationAdministrator->dispatch()
#33 /www/data/web/eng/old/eeu/webpefaa/libraries/cms/application/cms.php(251): JApplicationAdministrator->doExecute()
#34 /www/data/web/eng/old/eeu/webpefaa/administrator/index.php(42): JApplicationCms->execute()
#35 {main}

[Hershel]

Your error message is cut off above but appears to be:

ALTER TABLE civicrm_value_pefaa_1 DROP COLUMN `date_of_birth_1` [nati..."

Can you check that table to see if that column exists?

Or do you know if a "date of birth" field exists in your "pefaa" data set?