PDOException Object
(
    [message:protected] => SQLSTATE[42S21]: Column already exists: 1060 Duplicate column name 'customer_im_select'
    [string:private] => 
    [code:protected] => 42S21
    [file:protected] => /opt/ocentric/magento/lib/Varien/Db/Adapter/Pdo/Mysql.php
    [line:protected] => 277
    [trace:private] => Array
        (
            [0] => Array
                (
                    [file] => /opt/ocentric/magento/lib/Varien/Db/Adapter/Pdo/Mysql.php
                    [line] => 277
                    [function] => query
                    [class] => PDO
                    [type] => ->
                    [args] => Array
                        (
                            [0] => ALTER TABLE `sales_flat_quote` ADD COLUMN `customer_im_select` varchar(255) NOT NULL
                        )

                )

            [1] => Array
                (
                    [file] => /opt/ocentric/magento/lib/Varien/Db/Adapter/Pdo/Mysql.php
                    [line] => 637
                    [function] => raw_query
                    [class] => Varien_Db_Adapter_Pdo_Mysql
                    [type] => ->
                    [args] => Array
                        (
                            [0] => ALTER TABLE `sales_flat_quote` ADD COLUMN `customer_im_select` varchar(255) NOT NULL
                        )

                )

            [2] => Array
                (
                    [file] => /opt/ocentric/magento/app/code/local/Hanleywood/Customer/sql/hw_customer_setup/mysql4-upgrade-0.1.8-0.1.9.php
                    [line] => 11
                    [function] => addColumn
                    [class] => Varien_Db_Adapter_Pdo_Mysql
                    [type] => ->
                    [args] => Array
                        (
                            [0] => sales_flat_quote
                            [1] => customer_im_select
                            [2] => varchar(255) NOT NULL
                        )

                )

            [3] => Array
                (
                    [file] => /opt/ocentric/magento/app/code/core/Mage/Core/Model/Resource/Setup.php
                    [line] => 376
                    [args] => Array
                        (
                            [0] => /opt/ocentric/magento/app/code/local/Hanleywood/Customer/sql/hw_customer_setup/mysql4-upgrade-0.1.8-0.1.9.php
                        )

                    [function] => include
                )

            [4] => Array
                (
                    [file] => /opt/ocentric/magento/app/code/core/Mage/Core/Model/Resource/Setup.php
                    [line] => 289
                    [function] => _modifyResourceDb
                    [class] => Mage_Core_Model_Resource_Setup
                    [type] => ->
                    [args] => Array
                        (
                            [0] => upgrade
                            [1] => 0.1.8
                            [2] => 0.1.9
                        )

                )

            [5] => Array
                (
                    [file] => /opt/ocentric/magento/app/code/core/Mage/Core/Model/Resource/Setup.php
                    [line] => 233
                    [function] => _upgradeResourceDb
                    [class] => Mage_Core_Model_Resource_Setup
                    [type] => ->
                    [args] => Array
                        (
                            [0] => 0.1.8
                            [1] => 0.1.9
                        )

                )

            [6] => Array
                (
                    [file] => /opt/ocentric/magento/app/code/core/Mage/Core/Model/Resource/Setup.php
                    [line] => 161
                    [function] => applyUpdates
                    [class] => Mage_Core_Model_Resource_Setup
                    [type] => ->
                    [args] => Array
                        (
                        )

                )

            [7] => Array
                (
                    [file] => /opt/ocentric/magento/app/code/core/Mage/Core/Model/App.php
                    [line] => 399
                    [function] => applyAllUpdates
                    [class] => Mage_Core_Model_Resource_Setup
                    [type] => ::
                    [args] => Array
                        (
                        )

                )

            [8] => Array
                (
                    [file] => /opt/ocentric/magento/app/code/core/Mage/Core/Model/App.php
                    [line] => 329
                    [function] => _initModules
                    [class] => Mage_Core_Model_App
                    [type] => ->
                    [args] => Array
                        (
                        )

                )

            [9] => Array
                (
                    [file] => /opt/ocentric/magento/app/Mage.php
                    [line] => 630
                    [function] => run
                    [class] => Mage_Core_Model_App
                    [type] => ->
                    [args] => Array
                        (
                            [0] => Array
                                (
                                    [scope_code] => bhp
                                    [scope_type] => store
                                    [options] => Array
                                        (
                                        )

                                )

                        )

                )

            [10] => Array
                (
                    [file] => /opt/ocentric/magento/index.php
                    [line] => 80
                    [function] => run
                    [class] => Mage
                    [type] => ::
                    [args] => Array
                        (
                            [0] => bhp
                            [1] => store
                        )

                )

        )

    [errorInfo] => Array
        (
            [0] => 42S21
            [1] => 1060
            [2] => Duplicate column name 'customer_im_select'
        )

)