Your htaccess is not up-to-date

Code:
#### BOF SSU
Options +FollowSymLinks -MultiViews
RewriteEngine On
# Make sure to change "test_site" to the subfolder you install ZC. If you use root folder, change to: RewriteBase / 
RewriteBase /zencart/

# Deny access from .htaccess
RewriteRule ^\.htaccess$ - [F]

RewriteCond %{SCRIPT_FILENAME} -f [OR]
RewriteCond %{SCRIPT_FILENAME} -d
RewriteRule .* - [L]

RewriteRule ^(.*) index.php?/$1 [E=VAR1:$1,QSA,L]
#### EOF SSU