Thanks for your help, Boyko
But, I am still stuck. My understanding was that the MiniCart was a nopCommerce feature while the FlyoutCart is a plug-in by SevenSpikes (looking at the source confirms it's part of the Ajax Cart??). Regardless, I cannot the find the file (for the flyout cart) and edit it to remove the CHECKOUT button. I'd like only two buttons in the flyout cart (and the mini cart) 'Continue Shopping' and 'View Cart'. Any button that directs to the first page of checkout prevents order completion, I think because the choice to Register or Checkout As Guest is bypassed.
Also, I edited the setting in nopCommerce for the Ajax Cart plug-in to not show the Add to Cart button on our category pages, but they are still there.
I'm using the Fashion Theme 2.60.
Thanks again, castironcook.
I can assure you that the Flyout cart is not a part of the Nop Ajax Cart plugin or any other plugin created by SevenSpikes. If you need more prove, just install a clean copy of nopCommerce (without our plugins) and you will see that the Flyout cart is there.
I tested your checkout process as guest and it was ok. I used the NopAjaxCart plugin on the product page and after adding the product to cart, I clicked the Checkout button. My checkout was successful!
Right now you are using the default nopCommerce default Ajax Cart on the category page, which is different from the NopAjaxCart plugin from SevenSpikes.
As Boyko said, you can find the Flyout view at Views\ShoppingCart\FlyoutShoppingCart.cshtml
and edit it. The view is located in the nopCommerce Views folder, not the Views folder in the NopAjaxCart plugin.
You can also edit the NopAjaxCart and remove the Checkout button. Just open the view located in Plugins/SevenSpikes.Nop.Plugins.AjaxCart/Views/NopAjaxCartShoppingCart/ProductAddedToCartPopupDialog.cshtml
and remove the checkout button from there.