diff --git a/classes/db_pdo.php b/classes/db_pdo.php
index 3c4f240..6e58163 100644
--- a/classes/db_pdo.php
+++ b/classes/db_pdo.php
@@ -171,9 +171,9 @@ abstract class DB_PDO extends PDO {
 	 */
 	public function get_last_error()
 	{
-		$info = $this->errorInfo();
+		list($i1, $i2, $i3) = $this->errorInfo();
 
-		echo "Error: <pre>{$info[0]}:{$info[1]}\n{$info[2]}</pre>";
+		echo "Error: <pre>{$i1}:{$i2}\n{$i3}</pre>";
 	}
 
 	// --------------------------------------------------------------------------
diff --git a/classes/db_util.php b/classes/db_util.php
index d6503a4..34993ef 100644
--- a/classes/db_util.php
+++ b/classes/db_util.php
@@ -27,6 +27,24 @@ abstract class DB_Util {
 		$this->conn =& $conn; 
 	}
 	
+	// --------------------------------------------------------------------------
+	
+	/**
+	 * Enable calling driver methods
+	 *
+	 * @param string $method
+	 * @param array $args
+	 */
+	public function __call($method, $args)
+	{
+		if (method_exists($this->conn, $method))
+		{
+			return call_user_func_array(array($this->conn, $method), $args);
+		}
+		
+		return NULL;
+	}
+	
 	// --------------------------------------------------------------------------
 	// ! Abstract Methods
 	// --------------------------------------------------------------------------
diff --git a/drivers/firebird/firebird_util.php b/drivers/firebird/firebird_util.php
index 804e749..a0dc334 100644
--- a/drivers/firebird/firebird_util.php
+++ b/drivers/firebird/firebird_util.php
@@ -140,9 +140,12 @@ class Firebird_Util extends DB_Util {
 		{
 			$sql = 'SELECT * FROM "'.trim($t).'"';
 			$res = $this->query($sql);
-			$obj_res = $this->fetchAll(PDO::FETCH_ASSOC);
-
-			unset($res);
+			$obj_res = $res->fetchAll(PDO::FETCH_ASSOC);
+			
+			// Don't add to the file if the table is empty
+			if (count($obj_res) < 1) continue;
+			
+			$res = NULL;
 
 			// Nab the column names by getting the keys of the first row
 			$columns = @array_keys($obj_res[0]);
@@ -163,12 +166,12 @@ class Firebird_Util extends DB_Util {
 
 				$row_string = 'INSERT INTO "'.trim($t).'" ("'.implode('","', $columns).'") VALUES ('.implode(',', $row).');';
 
-				unset($row);
+				$row = NULL;
 
 				$insert_rows[] = $row_string;
 			}
 
-			unset($obj_res);
+			$obj_res = NULL;
 
 			$output_sql .= "\n\nSET TRANSACTION;\n".implode("\n", $insert_rows)."\nCOMMIT;";
 		}
diff --git a/drivers/mysql/mysql_util.php b/drivers/mysql/mysql_util.php
index 283ae8c..4c197b1 100644
--- a/drivers/mysql/mysql_util.php
+++ b/drivers/mysql/mysql_util.php
@@ -121,10 +121,13 @@ class MySQL_Util extends DB_Util {
 	/**
 	 * Create an SQL backup file for the current database's data
 	 *
+	 * @param array $exclude
 	 * @return string
 	 */
-	public function backup_data()
+	public function backup_data($exclude=array())
 	{
+		$tables = $this->get_tables();
+	
 		// @todo Implement Backup function
 		return '';
 	}
diff --git a/tests/core/db_test.php b/tests/core/db_test.php
index 3e698c2..22b0587 100644
--- a/tests/core/db_test.php
+++ b/tests/core/db_test.php
@@ -48,5 +48,10 @@ abstract class DBTest extends UnitTestCase {
 		$res = $this->db->beginTransaction();
 		$this->assertTrue($res);
 	}
+	
+	function TestBackupData()
+	{
+		$this->assertTrue(is_string($this->db->util->backup_data()));
+	}
 }
 // End of db_test.php
\ No newline at end of file
diff --git a/tests/databases/firebird/firebird.php b/tests/databases/firebird/firebird.php
index abb48f6..9252908 100644
--- a/tests/databases/firebird/firebird.php
+++ b/tests/databases/firebird/firebird.php
@@ -187,5 +187,4 @@ SQL;
 	{
 		$this->assertTrue(is_array($this->db->get_triggers()));
 	}
-
 }
\ No newline at end of file
diff --git a/tests/db_files/FB_TEST_DB.FDB b/tests/db_files/FB_TEST_DB.FDB
index a7da6af..83122ed 100644
Binary files a/tests/db_files/FB_TEST_DB.FDB and b/tests/db_files/FB_TEST_DB.FDB differ