0.3.0 changes a few internals to fix a number of issues with chef-solo. They also removed the dependency on librarian-chef so you have to roll your own if you want it. 

Checkout the github repo for details on the 0.3.0 updates.  

Sent from my iPhone

On Apr 16, 2013, at 6:33 PM, Paul Welch <notifications@github.com> wrote:

> In Gemfile:
> 
> > @@ -2,3 +2,4 @@ source "https://rubygems.org"
> >  
> >  gem "chef", "~> 11.4.0"
> >  gem "librarian-chef", "~> 0.0.1"
> > +gem "knife-solo", "~> 0.3.0.pre3"
>  for knife-solo but why that specific version? Also, I think knife-solo may install its own version of librarian chef .
> 
> —
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