[HELP] Mix some CMS

[DVerse]

Hi guys its me, again.
Yesterday i started to mix some CMS to create something unique.
Now i encountered a problem.
I want to use the home.php from the TwistCMS and implement it on my SleekCMS. So far so well.
Now when i click My Profile in the Navbar it comes an error. (See Image).
I know i must change something in the app folder but i dont know what. I have the feeling its something like class.core.php etc.

This is the home.php that want to use.

Spoiler: Twist - Home.php

<?php

global $core;


include('/includes/header.php');


if(!isset($_SESSION['user']['username'])){
header('Location: /index');
exit();
}

// User Info \\
$userinfo = mysql_query("SELECT * FROM users WHERE username='$username' or id='$userid'");
$get2 = mysql_fetch_assoc($userinfo);


$user = $get2['username'];
$id = $get2['id'];
$looks = $get2['look'];
$email = $get2['mail'];
$rank = $get2['rank'];
$motto = $get2['motto'];
$credits = $get2['credits'];
$pixels = $get2['activity_points'];
$pvip = $get2['vip_points'];
$online = $get2['online'];
$role = $get2['role'];
$youtube = $get2['youtube'];
$account_created = $get2['account_created'];

$home = mysql_query("SELECT * FROM users WHERE username = '" . Filter($_GET['user']) . "' LIMIT 1");
if(mysql_num_rows($home) != 1)
{
$home = mysql_query("SELECT * FROM users WHERE username = '" . $_SESSION['user']['username'] . "' LIMIT 1");
}
$user = mysql_fetch_assoc($home);
?>



<div id="web_main">
<div id="main">
<div class="ab_title"><font><font>- <?php echo $user['username']; ?>'s Avatar</font></font></div>
<?php
$getuip = mysql_fetch_assoc(mysql_query("SELECT ip_last FROM users WHERE id='".$id."' LIMIT 1"));
$isBanned = mysql_query("SELECT null FROM bans WHERE value='".$getuip['ip_last']."' OR value='".$user['username']."' LIMIT 1") or die(mysql_error());
if(mysql_num_rows($isBanned) > 0)
{
echo '<div style="float: center;background: #FA5858;width: 897px; padding-left: 60px;padding-top:8px; border-radius: 5px; border: 2px solid #F78181;"><span style="color:white">This user is <b>banned</b>!</span></p></div><br><br>';
}
else
{
echo '';
}
?>
<div id="user_infobox">

<div style="float:left; width:450px;">

<div class="userinfos">

<div class="user_avatar">

<div style="margin-bottom: 14px;width:64px;height:110px;margin-left:auto;position:relative;margin-right:auto;background:url(

You must be registered for see links

<?php echo $user['look']; ?>&size=b&direction=3&head_direction=3&gesture=sml);"></div>



</div>


<div style="float:right;width:315px;margin-top: 35px;">
<div class="playername">This is <b><?php echo $user['username']; ?></b>!</div>

<div class="usercredits">
<div class="CreditIcon"></div>
<div class="cmenge"><?php echo $core->format_num($user['credits']); ?></div>
<div style="clear:both;"></div>
</div>

<div class="usercredits">
<div class="DucketIcon"></div>
<div class="cmenge"><?php echo $core->format_num($user['activity_points']); ?></div>
<div style="clear:both;"></div>
</div>

<div class="usercredits">
<div class="DiamondIcon"></div>
<div class="cmenge"><?php echo $core->format_num($user['vip_points']); ?></div>
<div style="clear:both;"></div>
</div>

<div class="usercredits">
<div class="GotwIcon"></div>
<div class="cmenge"><?php echo $core->format_num($user['gotw_points']); ?></div>
<div style="clear:both;"></div>
</div>

<div class="usermission">
<div class="MottoIcon"></div>
<div class="mission"><?php echo $user['motto']; ?></div>
<div style="clear:both;"></div>
</div>


</div>

</div>

</div>

<div style="float:right; width:510px;">

<div class="tb_box">
<div class="title">About <?php echo $user['username']; ?></div>
<p style="float: left;"><?php echo $user['aboutme']; ?></p><img style="float: right;" src="

You must be registered for see links

"/>

<div style="clear:both;"></div>
</div>

</div>

<div style="clear:both;"></div>
</div>

<div style="clear:both; height:20px;"></div>

<div style="float: left; width: 600px;display: block;">

<iframe width="600" height="256" src="//

You must be registered for see links

<?php echo $user['youtube_embed']; ?>?autoplay=0" frameborder="0" allowfullscreen></iframe>

</div>
<div style="width: 360px;float: right;">

<div id="ul_box">

<div id="title">Social Medias</div>
<td><b><img src="/app/tpl/skins/{skin}/images/homes/twittericon.png"><font> Twitter:</b> <?php echo $user['twitter']; ?></font></td><br><br>
<td><b><img src="/app/tpl/skins/{skin}/images/homes/snogicon.png"><font> Snog:</b> <?php echo $user['snog']; ?></font></td><br><br>
<td><b><img src="/app/tpl/skins/{skin}/images/homes/kikicon.png"><font> Kik:</b> <?php echo $user['kik']; ?></font></td><br><br>
<td><b><img src="/app/tpl/skins/{skin}/images/homes/snapchaticon.png"><font> Snapchat:</b> <?php echo $user['snapchat']; ?></font></td><br><br>
<td><b><img src="/app/tpl/skins/{skin}/images/homes/skypeicon.png"><font> Skype:</b> <?php echo $user['skype']; ?></font></td><br><br>
<td><b><img src="/app/tpl/skins/{skin}/images/homes/instagramicon.png"><font> Instagram:</b> <?php echo $user['instagram']; ?></font></td>

<div style="height:10px;"></div>



</div></div>


</div>
</div>

<?php include('/includes/footer.php'); ?>

Anybody have an idea? (if you need to see some other codes hit me up.
Cheers.



Edit: If you want to have a look my hotel is

You must be registered for see links

 

[Joe]

You need the rules from the web.config

 

[DVerse]

You need the rules from the web.config

thank you bud, worked fine!