That is weird. Apparently it does not find vtk5.
Probably you need to install vtk5 first.

# brew install homebrew/versions/vtk5

I will try to include that.

best
Chris


On 29 Dec 2013, at 17:48, Dave Clucas <dave@daveclucas.com> wrote:

mycavesmba11:~ daveclucas$ brew install https://raw.github.com/un1x86/homebrew/therion/Library/Formula/therion.rb
######################################################################## 100.0%
Error: No available formula for vtk5 
Searching taps...
homebrew/versions/vtk5


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