I have been trying for the past 2 days to install zencart and to no avail. I've uploaded and deleted files so many times that I've lost count. After going through the installation I receive this message when I go to the site - www.mykeepsakekreations.com:

Warning: main(includes/application_top.php): failed to open stream: Permission denied in /home/content/j/f/u/jfullermkk/html/index.php on line 26

Warning: main(includes/application_top.php): failed to open stream: Permission denied in /home/content/j/f/u/jfullermkk/html/index.php on line 26

Fatal error: main(): Failed opening required 'includes/application_top.php' (include_path='.:/usr/local/lib/php') in /home/content/j/f/u/jfullermkk/html/index.php on line 26

On the index.php page this is what's on line 26:
require('includes/application_top.php');

I get this message in the admin:

Warning: main(/home/content/j/f/u/jfullermkk/html/includes/autoload_func.php): failed to open stream: Permission denied in /home/content/j/f/u/jfullermkk/html/admin/includes/application_top.php on line 145

Warning: main(/home/content/j/f/u/jfullermkk/html/includes/autoload_func.php): failed to open stream: Permission denied in /home/content/j/f/u/jfullermkk/html/admin/includes/application_top.php on line 145

Fatal error: main(): Failed opening required '/home/content/j/f/u/jfullermkk/html/includes/autoload_func.php' (include_path='.:/usr/local/lib/php') in /home/content/j/f/u/jfullermkk/html/admin/includes/application_top.php on line 145

On the admin/includes/application_top.php page this is what's on line 145:
require(DIR_FS_CATALOG . 'includes/autoload_func.php');

Would someone please help me??? I am so FRUSTRATED with this and don't know how to fix the problem. I feel like giving up if this is going to take me another 2 days to try and figure out. Thanks in advance!