Problems with Coda 2/CoffeeScript plugin

Regarding plugin for Coda 2. I am having some problems making it work. I have written a small test program in CoffeeScript, but when i try to run and/or compile I get the following error message:

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All settings/env. variables should be set correctly:

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Do you have any idea as to what that may cause this issue? I have installed node using homebrew, and then coffee script via npm. All the shell variables have been verified, and I am able to run node from the command line and write scripts there. Also, when i go to settings and click on "About", I get the following:

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Hope you can help.

Thank you and best regards, Thomas

In Terminal, run the command:

which coffee

For me, this gave:

/usr/local/bin/coffee

So in the CoffeeScript Plug-In Settings, I set PATH to:

/usr/local/bin

Then when I went to the About box, it showed the version of CoffeeScript that I have installed and the Run & Compile options then worked fine.