Ceon SEO URl gives the error page not found in zen cart
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I am installed a zen cart plugins `"Ceon's SEO URL"`.

Admin panel have no error in the installation but in the site when i click on the Product name it will show 404 error


I am try to follow  installation step of ceon's plugin but i am face the problem

    8.Add the Rewrite Rule to the Webserver (Apache/IIS etc.)

so please help me. 



I am this .htaccess file on this path `htdocs\zencarttest\zencart` and my .htaccess is as folow


    ## BEGIN CEON URI MAPPING REWRITE RULE
    
    RewriteEngine On
    
    # ONLY rewrite URIs beginning with /zencarttest/zencart/
    RewriteCond %{REQUEST_URI} ^/zencarttest/zencart/ [NC]
    
    # Don't rewrite any URIs ending with a file extension (ending with .[xxxxx])
    RewriteCond %{REQUEST_URI} !\.[a-zA-Z]{2,5}$ [OR]
    RewriteCond %{REQUEST_URI} \.(html)$ [NC]
    
    
    
    
    # Don't rewrite any URIs for some specific file format extensions,
    #   which are not covered by main file extension condition above
    #   Uncomment the following line to apply this condition! (Remove the # at the start of the next line)
    RewriteCond %{REQUEST_URI} !\.(3gp|3g2|h261|h263|mj2|mjp2|mp4v|mpg4|m1v|m2v|m4u|f4v|m4v|3dml)$ [NC]
    
    # Don't rewrite admin directory
    RewriteCond %{REQUEST_URI} !^/zencarttest/zencart/admin_test [NC]
    
    # Don't rewrite editors directory
    RewriteCond %{REQUEST_URI} !^/zencarttest/zencart/editors/ [NC]
    
    # Handle all other URIs using Zen Cart (its index.php)
    RewriteRule .* /zencarttest/zencart/index.php [QSA,L]
    
    ## END CEON URI MAPPING REWRITE RULE


Where i am make mistake??


Please help me thanks in advance...  