Zech

I hope someone can help me. I'm using the Atari800 Plus emulator to play a game using a disk (.atr). I have placed all of the sysem roms where they belong and have told Atari800 how to locate them. However, when I try to load the game, I get "boot error" contiuiously scrolling down the screen. I have checked and rechecked that everything is where it belongs. Any ideas would be helpful. Thanks.