it's nothing, all ran online private server got this....
1.Make sure you're using CHINA RAN CLIENT not any other client.
2.IF you already got the client, download the patch then extract it into your CHINA RAN folder.
3. IF you're an old user using CHINA RAN CLIENT, just download the new zcfg.file in
http://unixran.myvnc.com and replace the old zcfg.file.