When you use stuff like [25,72,233] behind @p or @a in commmands, you get a message saying "The entity UUID provided is in an invalid format". I tried the same command in 1.7.10 so I know I did it right.

It happens when you use coordinates and when you use scoreboard like [score_Kills_min=3], at least that's what I found when testing.

Here are some screenshots from the latest snapshot and in 1.7.10: