I didn't have any old system discs on hand and was having issues finding a good download so i used Chubby Bunny which is a preloaded & setup version of sheepshaver. I figured I'd post here to see if I can help out anyone else who wants to do this and save them some of the frustration I faced. So I spent several hours last night attempting to find a way to play a stable version of Diablo, and after many frustrating glitches and errors finally worked it out.