I installed openstudio-standards and now Sketchup 2018 can't load it.

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I'm not sure what I did exactly. I thought I installed openstudio-standards correctly. But when I open Sketchup, upon startup, it says, "Error loading OpenStudio Sketchup Plug-In: cannot load such file -- openstudio-standards"

So I did the following:

% gem list (openstudio-standards-2.7.0 is listed)
% gem uninstall openstudio-standards to remove the gem
% gem list (openstudio-standards-2.7.0 is no longer listed)

Launch Sketchup and get the error about not being to load openstudio-standards.

I have scanned my drives looking for any reference of openstudio-standard and can't find any. Any idea on what I can do next?