[Sserver-three-d] Whta is "ruby"?

[Ashkan F. <ash...@ya...>]

hello 
with thanks from Mr
I have downloaded the rcssserver3D.0.2.2 .
In configuring there was an error : "error yourruby is too old . use at lease ruby_1.8.0"
Now I want to know what is "ruby" & how can I continue configuring?
regards.
Ashkan.

		
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