Which exe did you/your friend use to patch their client? AlternativeSakray only patches until 2008/11/27, so you need to use Sakray.exe (or Sakup.exe if you have it/Sakray.exe isn't updating) to fully patch your client.
If that doesn't work, it might be an issue with your sdata.grf. Download
>this<, (courtesy of Zone!) and place it into your RO folder.