-------------------
1. functions.php
-------------------

Find:
--
$mybboard['internalver'] = "1.1.2";
$mybboard['vercode'] = "112";
--

Replace with:
--
$mybboard['internalver'] = "1.1.3";
$mybboard['vercode'] = "113";
--

-------------------
2. functions_post.php
-------------------

Find:
--
	$message = preg_replace('#^/slap (.*)#iem', "'<span style=\"color: red;\">* $username $lang->slaps '.str_replace('<br />', '', '\\1').' $lang->with_trout</span><br />'", $message);
--

REPLACE with:
--
$username = str_replace("'", "\\'", $username);
$message = preg_replace('#^/slap (.*)#iem', "'<span style=\"color: red;\">* $username $lang->slaps '.str_replace('<br />', '', '\\1').' $lang->with_trout</span><br />'", $message);
--


-------------------
3. private.php
-------------------

Find:
--
	$plugins->run_hooks("private_send_start");
--

ABOVE it add:
--
	if($mybb->input['do'] != 'forward' && $mybb->input['do'] != 'reply')
	{
		$mybb->input['do'] = '';
	}
--

ALL DONE.