Are you getting a connection error? It means that there is a new patch, simply click "run without an account" then log in with your rsbuddy user+pass it works that way for me. Or you can just download the client again.
using powerbot.org is good, but there's alot of controversey over them hacking accounts.
I think they hacked my lvl 3 acc and took its feathers, left the 3mil in the bank...