Thanks MAG, but it does not work period. I am absolutely certain that I have accurately completed the darkroom procedure, three times in fact. My wife, without my assistance, has done it twice. Same result. I believe that I have a bad copy of the game. When I move the loaded copyframe over the well, the screen flickers in and out at a certain point. This has happened to me twice before. When I purchased second copies of the games and used my saved games, there were no problems. I guess that I am not lucky.
I have spent far too much time on this sequence. Time to scrap the game and move on to another game.