Recently i discovered that the button to add material restrictions doesn't work anymore. I thought maybe it has to do with other settings like availability and show only or order, but no matter what you set those to, the add button does not work. It used to work and show that circular spinning thing to indicate it does and then add the restirction material to the list in the product page with a smal garbage bin behind it, but no more. I tried it on another system with different Browsers (Windows XP and Linux with IE, mozilla, firefox, opera etc.) I even went as far as using an old JAVA runtime (version 3, since that might interfere with operation of the scripts on the site and it used to work fine with Java 3 it just doesn't work anymore. The designs i am working on require as high a detail as possible and the parts won't fit when printed in WSF or can't be printed at all in that material due to definition etc. I also make use of the translucency of material for diffusion inserts that are needed to light up physical models that i build (i.e. white detail lends itself perfectly to work as a light diffuser for LEDS, WSF doesn't) So I can't put them up for sale in a shop, because people tend to order the cheapest available material they find on the list and it won't work, resulting in a dissatisfied customer. And i rather have no customer than a dissatisfied customer.