Seems like FTP and sharkscope don't like each others and full tilt trys to block sharkscope ....
Follow up from FT:
Using Sharkscope is prohibited while Full Tilt Poker
software is running. It doesn't matter if you play or not. Sharkscope gives access to information on other players beyond that which its users have personally observed through their own game play. The problem is with using information that they could not know based on their own personal experience. Our new prohibited programs page particularly insist on this point:
With single table tournaments and heads-up SnGs, the advantage gained from these prohibited sources of shared information can be very significant, to the detriment of honest but unaware players.
We appreciate if you are so kind and report us players who state that they use this kind of websites while playing, so we can put appropriate action on their accounts. However we monitor this kind of behaviour, we won't be able to find all of the players and that's why your help in this case is much appreciated.
Good luck at the tables, and if there's anything else we can help you with, please let us know.
Full Tilt Poker Support"
as SavagePenguin writes be carefull ...