Problem with National GunZ 1.5

[Desperate]

i have change patch.xml with ZPatchBuilder , but not working

Log start : Tue Jun 25 22:58:16 2013

Current Directory : C:\Users\abc\Desktop\National Gunz
22:58:16:737   [APP] OS version : Professional  (Build 9200)
22:58:16:771   [APP] Window created successfully.
22:58:18:956   [ZUpdate] Create.
22:58:18:956   [ZFileTransfer] Create.
22:58:18:956   [ZFileTransfer] Create successfully complete.
22:58:18:957   [ZFileTransfer] Open connection.
22:58:18:957   [ZFileTransfer] Open connection successfully complete.
22:58:18:957   [ZFileTransfer] Change directory.
22:58:18:957   [ZFileTransfer] Change directory successfully complete.
22:58:18:958   [ZUpdate] Create successfully compete.
22:58:18:958   [APP] Download patch info file
22:58:18:959   [ZUpdate] Start update.
22:58:18:960   [ZFileTransfer] Download file : ./patch.xml  to  ./patch.xml
22:58:18:964   [ZFileTransfer] ERROR : The server name or address could not be resolved


22:58:18:964   [ZUpdate] ERROR : Start update FAILED!!!
22:58:18:964   [APP] ERROR - Cannot download patch info file
22:58:18:965   [APP] Updater error message :

The update server is not responding or is not running right now.
     [Tip] Please check your firewall.
     [Tip] Please try again after a while.

22:58:18:965   [App] File transfer error message :

The server name or address could not be resolved

[MentaL]

[iOverRun]

that launcher .. i don't know
just Don't use the Launcher that was found in the client .. try some other one and post results