NerdCrow

I first want to thank you so much in advance for any help. I downloaded the Atari800MacX emulator for mac. I have installed it and downloaded the ROM's and the emulator starts up fine. But I have trying to run a game that is in the ATR format. The name of the gave is Ali Baba and the Forty Thieves. It is probably my most favorite game of all time and I played in when I was a kid in the 80's. When I load it on Disk 1 in the emulator, the screen just says 'Please Wait'. And it seems the screen is stuck and the game wont start. I downloaded the game from http://www.atarimania.com and I have got it to work a few years ago when I was using a PC, but now I am using a MAC. Am I doing something wrong with loading my game? Why is is stuck in 'Please Wait' mode? Can you please help? Thank you again in advance for any advice you can give. Kind regards, Jamie