Q:

Error On Running Ruby Code named "No SDKs Specified"

I have downloaded RubyMine IDE to run ruby code . I have written the following code:
puts 'hellow world'

But I have a error when I want to run this smallest program . The IDE shows the following error . 
"No SDKs specified"

Why ? What to do if I want to solve this problem ? I am a beginner in this language . Can you guys help me in this regard ? Also I want your suggestion . Is "RubyMine" best IDE for Ruby ? What IDE is used by you ? 

A:

You need to configure the SDK here:

Use the Add SDK... button and specify the path to the ruby executable on your system.
On Windows you should install Ruby using http://rubyinstaller.org/ binary release. Not the source package.

Questions like what is the best or your favorite are not welcome on this site, refer to the FAQ.

