I tryed to upgrade my Nightingale boots with Void Salts from Proudspire Manor and it didn't work. The ingredient on the upgrade banch was grayed out as if I didn't have it. The rest of my armor is already upgraded. After this I didn't had a chance to test if upgading the last pice of equipement is bugged for good or realy only the salts from that manor do not work.
Anyone else noticedd such thing?