What does GRF have anything to do with server's svn... GRF is a matter of updating your sakray (and heRO for heRO.grf).
If you did read any thread about svn update or battleground or the gigantic aldebaran woe related threads, all of them mention that heRO is on STABLE. Your test server is trunk.
Of course it works for your private test server and not for heRO.