SalamiShowdown

I also have this issue. I have used several modpacks, albeit from the FTB launcher, with no issues but now that i tried Hexxit out I really cant play. I increased the permgen & i have allocated 3gb memory but it still does this. always closing with no error or any indication to what the problem was. other threads have indicated that this kind of closure is a Java error. I have the latest Java update so i dont know what is the issue. lol turns out i dont have the latest java, was using update 25. updating to update 40 will let you know how that goes.

just typical, its started working. done nothing to change it.

I too am receiving this error. i updated to the latest launcher today & it took about 8 attempt for the mods to even show up but now I just get this error when trying to launch any mods even vanilla. My log seems to indicate that the launcher is having problems connecting to the server.