Hi, I have a similar problem and I don't understand the error message. I changed the name of my admin folder following the instructions in the tutorial. I tried changing it back when i got the error but I still get...

Warning: require(../../zen-cart-v1.3.7-full-fileset-12302006/admin/includes/application_top.php) [function.require]: failed to open stream: No such file or directory in /home/windowam/public_html/store/admin/index.php on line 23

Warning: require(../../zen-cart-v1.3.7-full-fileset-12302006/admin/includes/application_top.php) [function.require]: failed to open stream: No such file or directory in /home/windowam/public_html/store/admin/index.php on line 23

Fatal error: require() [function.require]: Failed opening required '../../zen-cart-v1.3.7-full-fileset-12302006/admin/includes/application_top.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/windowam/public_html/store/admin/index.php on line 23
What does this mean?? Please help!