Even though All Stars Launcher and many other emulators provide smooth emulation of games and operating systems, as you can see, the emulator might trigger some errors. 
If you happen to encounter an error or a crash, here is a FAQ section, in which you will find answers to a number of issues. It is important to realize that the emulator might be working fine and you might just have to try the emulator with different files on the first 50e0806aeb quitmey