Unable to navigate through classification system in Archicad-Grasshopper connection for the Mac

[Sebastian Monroe]

Hi,

I am trying to classify Archicad elements in Grasshopper on a Mac and cannot select through the classification tree to the right classification.  There should be little plus signs to allow the tree to expand as per the Archicad Grasshopper connection guide shows for a PC.  (Refer page 49)  See attached picture below.  Am I missing something or is this a bug?

I need to be able to issue to IFC all the work that I am doing and I cannot do this if I cannot select the correct classifications.

Be extremely grateful for a quick fix on this one otherwise I cannot use the Archicad-Grasshopper connection at this point.