Hey guys, i got a problem

my FTP client gives an error message every time i try to launch it.
this little box pops up with a yellow triangle with an exclamation mark inside. and a blue bar under it wich make it dissapear when i click it.
Maybe someone else got the same problem and can give me an anwser.

I tried reinstalling the software and sometimes it works for 1 time then. but after it worked. it goes just back to the error every time i launch it again.

so in order to play if have to reinstall it several times before i get once into the actuall server.

all help is welcome, thanks in advance!