hacking toturial [ error : 'require' cannot load such file ]

[dbwhddn10]

i am following this step jsDuck Wiki - Hacking

but error occured img url

I am tested yum installed ruby 1.8.7 , rvm install ruby 1.9.3 ( sentos 6.3 final )

but same error ocurred

installed gem list img url

help me please~!

[nene]

Sorry, you should be more specific. What is the file that 'require' cannot load?

I cannot see the images you have posted.

[dbwhddn10]

sorry and thank you reply ^^ i am edit img url

[nene]

Oh, that's simple. Just install the dimensions gem:

gem install dimensions

The latest jsduck in github #master uses it, but not the latest released jsduck.