SQL syntax error (shipping)

[woko]

Hiya,

I have a little annoying problem. I can't add prices to weight ranges at the shipping page. I see just the weight ranges and right below them is just button to save changes. But when I click it, I get this:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 2

       INSERT INTO `shop_delivery` (`id_range_price`, `id_range_weight`, `id_carrier`, `id_zone`, `price`)
       VALUES 

Some ideas folks?