I agree with Danny, there seems little to sue for.... you also couldn't sue Microsoft for releasing Windows Vista even though you
really, really liked XP. I'm not familiar with the US legal system but even as litigious as the courts can be there and as silly as some lawsuits are (OMG this coffee is hot? Really? It burned me, now I sue you and win... WTF? -
Liebeck v. McDonald's Restaurants - Wikipedia, the free encyclopedia) even they couldn't take something like this on without any merit whatsoever. At least the old woman got burned. Maybe if you can show that 4e gave you third degree burns from playing it or something?