Well, you can't assume a DP and there are so many possibilities that can happen with a CS, so I was just asking.
Actually, you can assume a double play. You don't charge an error on a bad throw to complete a double play, but if the fielder simply drops what should have been an out, you can certainly charge him an error.
BTW,
The official ruling on the caught stealing reads like this:
"When in the scorer’s judgment a runner attempting to steal is safe because of a muffed throw, the official scorer shall not credit a stolen base. The official scorer shall credit an assist to the fielder who made the throw, charge an error to the fielder who muffed the throw and charge the runner with “caught stealing.”
