Actually I spoke too soon, it isn't working ALL fine. I'm getting the doubling thing on my checkout page.
The fix for it says:
Find the following code around line 230
'final_price' => $products[$i]['price'] + $cart->attributes_price($products[$i]['id']),
Change it to:
'final_price' => $products[$i]['final_price'],
but in my shopping_cart.php it doesn't have that line, it's got:
'final_price' => ($products_price + $attributes_price),
'attributes_price' => $attributes_price, //phpmom.com//aap
Can anyone shed some light on how to fix it?