Hey, i'm running f*ckpsn on my pc.
But when I try to run it out my friends pc I get this Message and the program shuts down

C:\Users\navn\Desktop>fuc.exe
****PSN v0.5 by drizzt <drizzt@ibeglab.org> -- http://3.ly/****PSN
C:/Users/navn/AppData/Local/Temp/ocrA1DA.tmp/src/****Psn.rb:55:in `initialize'
: Normalt mÕ en socket-adresse (protokol/netvµrksadresse/port) kun bruges Ún gan
g. - bind(2) (Errno::EADDRINUSE)
from C:/Users/navn/AppData/Local/Temp/ocrA1DA.tmp/src/****Psn.rb:55:in
`new'
from C:/Users/navn/AppData/Local/Temp/ocrA1DA.tmp/src/****Psn.rb:55:in
`<main>'


I've closed all my programs. How do I find out what the problem is?
I'm running windows 7 64bit