Errors with macOS 11.6 Big Sur and SketchUp 2021

I am getting this error when loading SketchUp 2021 on macOS 11.6:

Error Loading File /Users/jg/Library/Application Support/SketchUp 2021/SketchUp/Plugins/ExtrudeTools/ExtrudeToolsLoader.rb

Error: #<SyntaxError: /Users/jg/Library/Application Support/SketchUp 2021/SketchUp/Plugins/ExtrudeTools/ExtrudeToolsLoader.rb:33: Invalid return in class/module body

return nil if noPlugin ### we’ve go…

Anyone else having this problem? Ideas to fix? Thank you.

According to the SketchUcation page, the Extrusion Tools plugin is compatible with SketchUp version 2019 and older. @TIG , its author, might have better knowledge about its compatibility with version 2021.

OK. Thank you for your response.

I suspect that you’ve copied across files from an older version of this extension or installed an older version RBZ
It’s current version is v5.0 - what are you seeing reported in the Extension Manager ?
One of the main changes in early 2019 was to sidestep the less forgiving nature of the newer version’s Ruby which raised this very error… So it’s been ‘fixed’ for almost two years…
I’ve updated it’s compatibility listing, but otherwise it’s unchanged…
Get the latest version from it SketchUcation PluginStore…
https://sketchucation.com/pluginstore?pln=ExtrudeTools