this happened to me too. It crashes whenever you select a file.
Firstly, trash your sram and mempak data for the game. In game settings, set default save type to "32kbytes SRAM". Save to cartridge memory.
Secondly (optional), make sure both the emulator and game memory setting is set to 8MB, though it probably autodetected that anyway (mine doesn't because I'm *way* under spec).