TO guy talked about trojan... i use it for long time.... no harming for me ^^
to guy with problems dude look my advice:
1)when u click start than it failed- wait little bit more then 15 seconds just than try again.
2)if this problem happened to you all the time so:
basicly no one solved it... maybe lags so try re-log and it works for me anyway...
what u dont do DONT CLICK SO MUCH...2 JUST ONE TIME WHEN U CLICK MORE THEN PNE TIME U DESTROY IT ^-^
HOPE I HELPED ^^
btw need kinda strong pc to run 2 clients or more... so...