Fix a variable type mismatch (issue #89) in system/database/DB_driver.php
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
index 12c0530..31e4c2b 100644
--- a/system/database/DB_driver.php
+++ b/system/database/DB_driver.php
@@ -1166,7 +1166,7 @@
 
 		if ($native == TRUE)
 		{
-			$message = $error;
+			$message = ( ! is_array($error)) ? array($error) : $error;
 		}
 		else
 		{
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 50875ab..0afdbe4 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -133,6 +133,7 @@
 	<li>Fixed a bug (#112) - OCI8 (Oracle) driver didn't pass the configured database character set when connecting.</li>
 	<li>Fixed a bug (#182) - OCI8 (Oracle) driver used to re-execute the statement whenever num_rows() is called.</li>
 	<li>Fixed a bug (#82) - WHERE clause field names in the DB <samp>update_string()</samp> method were not escaped, resulting in failed queries in some cases.</li>
+	<li>Fixed a bug (#89) - Fix a variable type mismatch in DB <samp>display_error()</samp> where an array is expected, but a string could be set instead.</li>
 </ul>
 
 <h2>Version 2.0.3</h2>