DesignPH extension won't work

[cmaltby]

Hello,

I use SU2018 Pro and loaded the designPH extension using "Extension Manager". The extension appears in the Extension Manager, like any other extension, however when I open SketchUp, I get an error message which I'll attach. I successfully loaded the extension to my SU2018 Pro on my MacBook Pro without issue but it doesn't seem to want to load properly on my newer iMac (same OS). Could it be the my copy of SU has become corrupted somehow? Is anyone able to interpret the attached error message and offer any clues as to where the problem is?

FYI, designPH is a plugin that is related to the design and calculations necessary for Passivehouse building design.

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[TIG]

The error relates to its use of ' getcwd' = which is not defined.

Contact the developer of this extension direct.
It's clearly a coding error...

Dir.getwd returns the current working directory, but there are several ways to check the current-working-directory ... should you really need it !

This is avoidable...