I have been having the strangest problem. While playing Pokemon Red, I get to a point where I need to sell some items. Someone only needs to try to sell two items, and while the first item will sell fine, with the second item the error appears. First no price appears and then none of the controls will work. Now I don't know if this is a problem with the Emulator or the Game itself. I have tried exiting it out and coming back at an earlier saved point only to have the problem happen again. I have also tried it with multiple different items. However, it doesn't seem like it matters what the second item is. Any help will be appreciated.

Continuance: So far, the above problem has occurred will selling items at the Mart in Cerulean City with either Escape Rope as the second item, and the Nugget as either the first or second item. This problem is getting beyond bizarre.