note : "beware this code was downloaded recently from here (wrox.com) its not the same code present in the book its the downloadable version"
This is the error i have :

A PHP Error was encountered
Severity: Notice

Message: Undefined index: category_id

Filename: views/admin_pages_home.php

Line Number: 22

---------------------------------------------------
help please.
thanks.

the new error :

A PHP Error was encountered
Severity: Notice

Message: Undefined variable: cats

Filename: views/admin_pages_home.php

Line Number: 25

i am wondering what categories has to do with the pages !

i have solved the error issue by commenting out the code that caused the error in the view file admin_pages_home.php :

echo "<td>";
if (!preg_match("/\.html$/",$list['path'])){
$list['path'] .= ".html";
}
echo "/". $list['path'];
// if ($category['id'] == 0){
// echo "/". $list['path'];
// }else{
// echo "/". $cats[$list['id']]. "/". $list['path'];
// }
echo "</td>";

mr myer can you please explain to us how to solve this error without commenting out this code ?
what you intended to do with the page path we dont understand ?

thanks.