I wish somebody else try the following for removing StarSqueak



toRemove _ SystemOrganization categoriesMatching: 'StarSqueak*'.
toRemove do: [:each | SystemOrganization removeSystemCategory: each].

(SmartRefStream class selectors select: [:each | each beginsWith:
'starLogo']) 
        do: [:each | SmartRefStream class removeSelector: each].
Smalltalk garbageCollect.

Thanks in advance.

Edgar