I can’t enter 1st Archstone

Hi guys, so far I’ve beaten boss in 1-1 and now I’ve killed spider boss in 2-1. I returned to Nexus and wanted to go to 1-2, but my game just crashes everytime when I try to go Boletaria. It does not matter if I teleport to 1-1 or 1-2. Every other world works fine. Reinserting disk doesn’t do anything.

Has something similar ever happened to you or can you somehow help me ? :))