Have you saved the file at controllers/cart.php in the root? Is its class named CartController ? If you add a print statement in the on_start() function within that controller, does it print out at the top of your /cart/ page (it should).

What files and directories do you have in your local single_pages/ and controllers/ directories? Have you added the "/cart" single page through the Dashboard > Pages & Themes > Single Pages page in the dashboard?

ah... fixed. I've used /simple_pages/ and moving it to the root controllers and models folders fixed this

Hi Andrew,

I have the same problem, I copied the cart code from the single pages how to - the view cart.php is in single_pages(non-root concrete folder) the cart.php controller is in the concrete root controllers folder and the cart.php model in the root models folder.

The error I get is page not found and the url looks like thishttp://localhost/concrete/index.php/cart<?=$this->action(...

Thanks,
Emir

Solved. The issue were the short tags so I replaced <? with <?php and <?= with <?php echo and put the closing tags in the appropriate places