R Extension in Rapidminer 6.5

I was install rapidminer 6.5 version, then i want to install r extension, but i found that last version of r extension not compatible to rapidminer 6.5 version. So,  whether r extension will available for rapidminer 6.5?? whether someone have tutorial for r scripting in rapidminer?? because, when i try it just show memory buffered file...

thank you,