command-t plugin need wrong ruby version

I want to install command-t plugin.(gvim 7.4; windows)
https://github.com/wincent/command-t
It needs ruby 1.9.2. I download the right ruby version.
http://rubyinstaller.org/downloads/archives
But when I run ':ruby 1' to test ruby. It shows Error "E370 msvcrt-ruby192.dll
lost", then I goto the ruby diretory to search the 192.dll, but only msvcrt-ruby191.dll, I tried all 192 ruby verion in above page. All of them 191.dll, I tried to change msvcrt-ruby191.dll to msvcrt-ruby192.dll, not work.

question:
Is there anyone istall command-t plugin, how do you do it?

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