diff --git a/phpBB/install/install_convert.php b/phpBB/install/install_convert.php
index 12d4eda5ec..91c96134d0 100644
--- a/phpBB/install/install_convert.php
+++ b/phpBB/install/install_convert.php
@@ -1553,13 +1553,23 @@ class install_convert extends module
 
 		if ($final_jump == 1)
 		{
+			$db->sql_return_on_error(true);
 			update_topics_posted();
-
 			$template->assign_block_vars('checks', array(
 				'TITLE'		=> $user->lang['UPDATE_TOPICS_POSTED'],
 				'RESULT'	=> $user->lang['DONE'],
 			));
-
+			
+			if ($db->sql_error_triggered)
+			{
+				$template->assign_vars(array(
+					'S_ERROR_BOX'	=> true,
+					'ERROR_TITLE'	=> $user->lang['UPDATE_TOPICS_POSTED'],
+					'ERROR_MSG'		=> $user->lang['UPDATE_TOPICS_POSTED_ERR'],
+				));
+			}
+			$db->sql_return_on_error(false);
+			
 			$this->finish_conversion();
 			return;
 		}
diff --git a/phpBB/language/en/install.php b/phpBB/language/en/install.php
index ea5e31ab9f..98688fd957 100755
--- a/phpBB/language/en/install.php
+++ b/phpBB/language/en/install.php
@@ -343,6 +343,7 @@ $lang = array_merge($lang, array(
 	'UNAVAILABLE'				=> 'Unavailable',
 	'UNWRITABLE'				=> 'Unwritable',
 	'UPDATE_TOPICS_POSTED'		=> 'Generating topics posted information',
+	'UPDATE_TOPICS_POSTED_ERR'	=> 'An error occured while generating topics posted information. You can retry this step in the ACP after the conversion process is completed.',
 	'VERSION'					=> 'Version',
 
 	'WELCOME_INSTALL'			=> 'Welcome to phpBB3 Installation',