I was trying to Install ItemShop 3.2 but...

[DrkFusion]

Fatal error: Call to a member function on a non-object in /home/sites/site12/users/forum/web/admin/functions.php on line 211

That error came up whats wrong?

// ########################### find weapons ###########################

$currentweapon2=$DB_site->query_first("SELECT weapons FROM user WHERE userid=$post[userid]");
$currentweapon = $currentweapon2[weapons];
if(!$currentweapon) {
$currentweapon="No Item";
} else {
eval("\$post[hasweapon] .= \"".gettemplate("weapons")."\";");
}

// ########################### find armor ###########################

$currentarmor2=$DB_site->query_first("SELECT armor FROM user WHERE userid=$post[userid]");
$currentarmor = $currentarmor2[armor];
if(!$currentarmor) {
$currentarmor="No Item";
} else {
eval("\$post[hasweapon] .= \"".gettemplate("armors")."\";");
}

// ########################### find accessories ###########################

$currentaccessory2=$DB_site->query_first("SELECT accessories FROM user WHERE userid=$post[userid]");
$currentaccessory = $currentaccessory2[accessories];
if(!$currentaccessory) {
$currentaccessory="No Item";
} else {
eval("\$post[hasweapon] .= \"".gettemplate("accessories")."\";");
}

Some where there is the code.....like 211 is
$currentweapon2=$DB_site->query_first("SELECT weapons