GetTextTranslator availableForLocaleID: (LocaleID isoLanguage: 'en')
returns a NaturalLanguageTranslator. NaturalLanguageTranslator has an
abstract implementation of #isDomainLoaded: so

    (GetTextTranslator availableForLocaleID: (LocaleID isoLanguage:
'en')) isDomainLoaded: 'Etoys'

raises a subclassResponsibility error.

I just had a Process fail because of this, but I don't know what
caused it: I just switched back to the (fully updated) image where I
was looking at Colin's Mirror implementation, and saw the debugger.

frank