open ollydbg, rightclick, search for, all referenced textstring, go to the top of the list, rightclick, search for text, enter Silkroad.exe, press enter to get into the code, 2 lines above the push of that message there's a JNZ. doubleclick on it, and change the JNZ to JMP. if you run the sro_client.exe nnow, it won't give you that error.
you can save the changes to the file now, by rightclick, copy to executable, all modifications.
i've also uploaded a really

. he also removed the swearfilter from the client. if you don't want this, you can simply skip that part =)