Discount coupon code isn't working!

Hey PS,

I just grabbed Massive Fuel, Pulsor II soundset and Hybrid Militia. I received a downloadable coupon code in ms-word format but the coupon isn't working with other sample libs. For instance, I am interested to grab Cello Ibrida but the code is expired it says.

Does this code work only on certain products?

Thanks Keep them soundset and samples coming !