Ninsilk2

Sorry for posting this here I really don't know where else to post it but I need help.
I want to get the last datacron on Nar Shaddaa but in order to get the last one you need to have a Slot Decoder item (http://www.torhead.com/item/bpyG3c7). There is a machine near the previous datacron that gives you the item but when I click it it says 'Failed to give Slot Decoder in your inventory'.
My inventory is empty and I don't know why it says that but obviously it does. I reloged tried everything it doesn't work.
I don't know if you can buy the item from somewhere, or craft it so I'm asking for help here.
Can support or any other player tell me a way how to get the item and get that LAST datacron on the planet so I can move on please?
It's driving me crazy not to have collected the last one so please!!