running error :( what's the problem?

[MarCello]

---------------------------
Error
---------------------------
Ack, wkWormNAT2 initialization error!



wkWormNAT2 failed to install the network API hooks it needs in order to work.

This could be caused by several reasons...

If you're running an anti-virus program, it might be blocking wkWormNAT2.

It's possible that you need to be a system administrator to run wkWormNAT2.

Maybe there's some other software incompatibility with wkWormNAT2...

The exact cause can't be determined.

Anyway, try rebooting and disabling your security programs.
---------------------------
OK   
---------------------------

[StepS]

BitDefender is known to prevent wkWormNAT2 from working, and cause the "Ack, wkWormNAT2 initialization error" message.

• This happens even if the antivirus is turned off and the game directory added to exclusions; the antivirus must be completely uninstalled to prevent this problem.
  
• A workaround is to copy this file to the installation directory of the game to trick BitDefender into not blocking it.