No Anssi, that is the result of Sketchup::require downcasing path strings before pushing them into the $LOADED_FEATURES array. This is normal and fine as long as forward slashes are used in the path string (as shown in the Console output above.)
His error (NoMethodError) is the old calling #deleted? upon the model object which does not have that method because Model is not a subclass of Entity.
@Dart I explain the bug (which has been broken for years!) and show a quick fix here …
Components don't appear in "Component Option" Window - #22 by DanRathbun
@Colin It will be 7 YEARS this December at the least that this bug has been reported but not fixed !