The custom items need to be reviewed and accepted/declined by the art team first. Until then they appear in your Inventory with those non-existing coords.
If approved the item will appear at your position (in the room of the ship you're in if you're in hyper). :)
Don't erase your questions and topics. It prevents others with the same issue from finding your thread and seeing the answer, thereby saving them from having to ask it again (and others from answering it, again).
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"May the Grace of Ara go with you, and His Vengeance be wrought upon your enemies."