You should re-upload the login.tpl.php file. From looking at the current distribution file, as well as my own installation... I see the first 24 lines of login.tpl.php as:
<?php defined('OSTSCPINC') or die('Invalid path'); ?>
<html xmlns="http://www.w3.org/1999/xhtml" xml="en" lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>osTicket:: SCP Login</title>
<link rel="stylesheet" href="css/login.css" type="text/css" />
<meta name="robots" content="noindex" />
<meta http-equiv="cache-control" content="no-cache" />
<meta http-equiv="pragma" content="no-cache" />
</head>
<body id="loginBody">
<div id="loginBox">
<h1 id="logo"><a href="index.php">osTicket Staff Control Panel</a></h1>
<h1><?=$msg?></h1>
<br />
<form action="login.php" method="post">
<input type="hidden" name=do value="scplogin" />
<table border=0 align="center">
<tr><td width=100px align="right"><b>Username</b>:</td><td><input type="text" name="username" id="name" value="" /></td></tr>
<tr><td align="right"><b>Password</b>:</td><td><input type="password" name="passwd" id="pass" /></td></tr>
<tr><td> </td><td> <input class="submit" type="submit" name="submit" value="Login" /></td></tr>
</table>
</form>
</div>
Line 14 would be:
<h1><?=$msg?></h1>
