OK gonna try help you first when dont have pb or just need update eazyest way is to install and update again.
Dowload PB from here
http://www.evenbalance.com/index.php?page=pbsetup.php there is guide but i will try short it.
Instal pb select game "bed companion 2" check for updates and update that should be all.
Punkbuster dont have autouptade so you must do it by your self. If you whant to update it manualy here is link and guide how to do it but i sugest to instal again and update from there...
http://www.evenbalance.com/index.php?page=dl-bc2.phpHere is pb suportpage for other problems ect
http://www.evenbalance.com/index.php?page=support-bc2.phpBut for "No Packet Flow" kicks i readed there are fiew ways to fix ti so gonna copy/paste fiew

#1 Just try disable firewall and try game.
#2 "Isshue was vista64 Pnkbsta and b has to be copied to system32 directory and firewall set up to let it pass"
#3 "Install/Update Javascript! That fixed it for me!"
#4 "its common problem try reinstall pb best idea using it as administrator:
1. open Windows Explorer and browse to c:\windows\system32
64 bit, you need to browse to c:\windows\syswow64
2. scroll down and find PnkBstrA.exe - PnkBstrB.exe,
3. right-click PnkBstrA.exe - PnkBstrB.exe and choose Properties.
4. click the Compatiblity tab.
5. click the button "Change settings for all users".
6. click the checkbox for "Run this program as an administrator".
7. click the "Ok".
8. Restart your PC"
Thats all i hope it helped
