MVC Error

I have a page on my website, that is built on MVC Zend Framework.  I am getting an error message and I am not sure what it means.  The following is the error message.  Can anyone shed any light on what might be the issue?

 Message: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')) ORDER BY `date_entered` DESC, `t_id` DESC' at line 1
Stack trace:
#0 /usr/local/lib/php/Zend/Db/Statement.php(320): Zend_Db_Statement_Pdo->_execute(Array) #1 /usr/local/lib/php/Zend/Db/Adapter/Abstract.php(479): Zend_Db_Statement->execute(Array) #2 /usr/local/lib/php/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query(Object(Zend_Db_Table_Select), Array) #3 /usr/local/lib/php/Zend/Db/Table/Abstract.php(1516): Zend_Db_Adapter_Pdo_Abstract->query(Object(Zend_Db_Table_Select)) #4 /usr/local/lib/php/Zend/Db/Table/Abstract.php(1332): Zend_Db_Table_Abstract->_fetch(Object(Zend_Db_Table_Select)) #5 /home/mrstaxin/public_html/dev/library/Stax/User/Regional.php(198): Zend_Db_Table_Abstract->fetchAll(Object(Zend_Db_Table_Select)) #6 /home/mrstaxin/public_html/dev/application/controllers/ReportsController.php(46): Stax_User_Regional->getInvoiceReports('', NULL) #7 /usr/local/lib/php/Zend/Controller/Action.php(513): ReportsController->invoicesAction() #8 /usr/local/lib/php/Zend/Controller/Dispatcher/Standard.php(295): Zend_Controller_Action->dispatch('invoicesAction') #9 /usr/local/lib/php/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #10 /usr/local/lib/php/Zend/Application/Bootstrap/Bootstrap.php(97): Zend_Controller_Front->dispatch() #11 /usr/local/lib/php/Zend/Application.php(366): Zend_Application_Bootstrap_Bootstrap->run() #12 /home/mrstaxin/public_html/dev/index.php(37): Zend_Application->run() #13 {main} 

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This is the code that I think it is refering to:
	public function getInvoiceReports($where = null, $order = "date_entered DESC")
		if (is_null($order)) {
			$order = "date_entered DESC";
		$invoices = new Db_Invoices();
		$sel = $invoices->select();
		$sel->where('user_id IN (?)', new Zend_Db_Expr($this->managedUsers(true)))
			->order(array(trim($order), 't_id DESC'));

		if ($where) {

		return $invoices->fetchAll($sel);

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Terry WoodsIT GuruCommented:
The problem may originate in the value of $where. Can you find out what that is, and post it if you can't see the problem? Perhaps there are non-matching round brackets?

It may also be helpful to output the SQL somehow. I use CodeIgniter rather than Zend so I don't know how to do this, but there should be a way.
Ray PaseurCommented:
There is a syntax error in the query.  I think you're in the right place tracking it down.  The generated SQL string ends in this.  I'm not sure I can see the error there.

ORDER BY `date_entered` DESC, `t_id` DESC' at line 1

You might want to add var_dump($invoices) at line 15, before the return.  Then you can probably see the entire query string.
The double bracket in the error would be a bit suspicious

right syntax to use near ')) ORDER BY `date_entered

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