Attempted to purchase four 'piles of curses' from a vendor, but received an error message each time informing me to cancel and try again. After repeated attempts without success I acquired the items through offline purchase, which successfully transferred the vendor's items to my own store inventory. However, upon attempting to exchange the items from my inventory, I am receiving the same error message once again. The error message occurs after I click READY, and reads as follows:

"Dispenser 24: This trade session contains errors, please cancel and try again. It will not cancel itself so you can capture important information to report problems. 14:36:55"

Same thing with me, except when I'm trying to withdraw coupe d'isastor from Dispenser 40

Found out its a bug that the system created duplicate entries of items.