I try to place the multicannon I bought, but it tells me Nulodian has a replacement for me, but everytime I go to him and ask for a replacement he tells me he doesn't... Tried hopping worlds and trying it, tried selling my multicannon and then talking to him. Still nothing. Even after buying another one it still tells me Nulodion has a replacement for me.
@Witty Spoof: In addition to what everybody else has said in this thread (thank you), please do not hesitate to also use the in-game report function and add as much information as you can. Thank you in advance.