i have the same problem

this is the mlog

Destroy gunz
Destroy sound engine.
Destroy sound engine. success
Destroy console.
Destroy interface begin
destroy client.
PeerInfoList Released
clear looks end.
Widget map clear end.
desctroy cursor system end.
clear IDL resource end.
Final interface end.
Destroy game interface done.
clear looks end.
Widget map clear end.
desctroy cursor system end.
Destroy mesh manager.
Destroy weapon mesh manager.
Clear SkillManager.
Clear QuestItemDescMgr.
Clear MatchItemDescMgr.
Clear ChattingFilter.
Clear ChannelRuleMgr.
destroy game application done.
interface finalize.
game input destroy.
game configuration destroy.
Bitmap manager destroy Animation bitmap.
destroy gunz finish.
Rframe_destory::closeDisplay

this is patchlog

03:53:0330 [ZUpdatePatchNode] Needs to update : system.fgz3 (not exist)
03:53:0591 [ZUpdate] Check valid from patch list successfully complete.
03:53:0591 [ZUpdate] + Total patch file count : 1
03:53:0591 [ZUpdate] + Total patch file size : 191723 bytes
03:53:0591 [APP] Exist patch file(s)
03:53:0592 [APP] Start file updating...
03:53:0592 [ZUpdate] Patch files.
03:53:0593 [ZFileTransfer] Download file : system.fgz3 to C:\Users\samer\Desktop\FGunZ\PATCH\system.fgz3_
03:53:06:123 [ZFileTransfer] Download successfully complete.
03:53:06:123 [ZUpdate] Successfully download '.\PATCH\system.fgz3_'
03:53:06:124 [ZUpdate] Patch files successfully complete.
03:53:06:124 [ZUpdate] Move patch files.
03:53:06:126 [ZUpdate] ERROR : Invalid CRC '.\PATCH\system.fgz3_'
03:53:06:126 [ZUpdate] Move patch files successfully complete.
03:53:06:126 [ZUpdate] ERROR : Cannot move patch files.
03:53:06:127 [APP] ERROR - Update fail
03:53:06:127 [APP] Updater error message :

Invalid CRC from the downloaded patch file. : .\PATCH\system.fgz3_
[Tip] Please check your anti-virus program and firewall running on your system.

03:53:06:128 [App] File transfer error message :


03:53:13:241 [ZUpdate] Destroy.
03:53:13:241 [ZFileTransfer] Destroy.
03:53:13:241 [ZFileTransfer] Close connection.
03:53:13:241 [ZFileTransfer] Close connection successfully complete.
03:53:13:242 [ZFileTransfer] Destroy successfly complete.
03:53:13:242 [ZUpdate] Destroy successfully complete.