Error after saving/editing/deleting item record

I just set up an Omeka 1.5.3 via DreamHost and everything seems to be working except for the error messages which occur after I save, edit, or delete an item record. When I go back to my item list, the record does actually save, including info in the main Dublin Core section, but tags do not save. Not sure how to fix this.

Here is the error log:
Stack trace:
#0 /home/africanetwork/syllabidepot.org/application/libraries/Zend/Db/Statement.php(115): Zend_Db_Statement_Mysqli->_prepare('? DELETE...')
#1 /home/africanetwork/syllabidepot.org/application/libraries/Zend/Db/Adapter/Mysqli.php(381): Zend_Db_Statement->__construct(Object(Zend_Db_Adapter_Mysqli), '? DELETE...')
#2 /home/africanetwork/syllabidepot.org/application/libraries/Zend/Db/Adapter/Abstract.php(478): Zend_Db_Adapter_Mysqli->prepare('? DELETE...')
#3 [internal function]: Zend_Db_Adapter_Abstract->query('? DELETE...', 7)
#4 /home/africanetwork/syllabidepot.org/application/libraries/Omeka/Db.php(83): call_user_func_array(Array, Array)
#5 /home/africanetwork/syllabidepot.org/plugins/ItemOrder/ItemOrderPlugin.php(64): Omeka_Db->__call('query', Array)
#6 /home/africanetwork/syllabidepot.org/plugins/ItemOrder/ItemOrderPlugin.php(64): Omeka_Db->query('? DELETE...', 7)
#7 /home/africanetwork/syllabidepot.org/plugins/ItemOrder/ItemOrderPlugin.php(52): ItemOrderPlugin->hookAfterDeleteItem(Object(Item))
#8 [internal function]: ItemOrderPlugin->hookAfterSaveItem(Object(Item))
#9 /home/africanetwork/syllabidepot.org/application/libraries/Omeka/Plugin/Broker.php(156): call_user_func_array(Array, Array)
#10 /home/africanetwork/syllabidepot.org/application/libraries/Omeka/Plugin/Broker.php(182): Omeka_Plugin_Broker->callHook('after_save_item', Array)
#11 [internal function]: Omeka_Plugin_Broker->__call('after_save_item', Array)
#12 [internal function]: Omeka_Plugin_Broker->after_save_item(Object(Item))
#13 /home/africanetwork/syllabidepot.org/application/libraries/Omeka/Record.php(304): call_user_func_array(Array, Array)
#14 /home/africanetwork/syllabidepot.org/application/libraries/Omeka/Record.php(566): Omeka_Record->runCallbacks('afterSave')
#15 /home/africanetwork/syllabidepot.org/application/libraries/Omeka/Record.php(807): Omeka_Record->save()
#16 /home/africanetwork/syllabidepot.org/application/libraries/Omeka/Controller/Action.php(482): Omeka_Record->saveForm(Array)
#17 /home/africanetwork/syllabidepot.org/application/controllers/ItemsController.php(99): Omeka_Controller_Action->editAction()
#18 /home/africanetwork/syllabidepot.org/application/libraries/Zend/Controller/Action.php(516): ItemsController->editAction()
#19 /home/africanetwork/syllabidepot.org/application/libraries/Zend/Controller/Dispatcher/Standard.php(295): Zend_Controller_Action->dispatch('editAction')
#20 /home/africanetwork/syllabidepot.org/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#21 /home/africanetwork/syllabidepot.org/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(97): Zend_Controller_Front->dispatch()
#22 /home/africanetwork/syllabidepot.org/application/libraries/Zend/Application.php(366): Zend_Application_Bootstrap_Bootstrap->run()
#23 /home/africanetwork/syllabidepot.org/application/libraries/Omeka/Core.php(165): Zend_Application->run()
#24 /home/africanetwork/syllabidepot.org/admin/index.php(44): Omeka_Core->run()
#25 {main}

The errors indicate it's some kind of problem with the ItemOrder plugin, at least this particular error you posted.

Are you using the latest version that works with 1.5? Have you tried uninstalling/reinstalling or deactivating the plugin?

That did it! Thank you, John!