The Proceed to Checkout button is not displaying
If your Proceed to Checkout button is not displaying, check your template cart.phtml file located in/app/design/frontend/[your_package]/[your_theme]/template/checkout/cart.phtml. If you are using an old version of this file, it may be missing css classes which will cause a conflict.
In the file mentioned above, make sure that the following code is present following <div>:
<div class="page-title title-buttons"> <h1><?php echo $this->__('Shopping Cart') ?></h1> <?php if(!$this->hasError()): ?> <ul class="checkout-types"> <?php foreach ($this->getMethods('top_methods') as $method): ?> <?php if ($methodHtml = $this->getMethodHtml($method)): ?> <li><?php echo $methodHtml; ?></li> <?php endif; ?> <?php endforeach; ?> </ul> <?php endif; ?> </div>
This could also be caused by heavy theme customizations including modifying cart.php.
To troubleshoot this, set your theme to the default Magento theme and see if the issue still persists.