Hi nicolai may be this is linked to your nautilus pass Right now I cannot drag and drop a class to a different package. Stef dropInAPackage: aCollection into: receiver aCollection do:[:aClass | self showGroups ifTrue: [ receiver addClasses: { aClass }. ActiveHand shiftPressed ifFalse: [ self selectedGroup removeClass: aClass. self updateClassView ]] ifFalse: [ receiver addClass: aClass theNonMetaClass. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ aClass is an iconicItem not a class ActiveHand shiftPressed ifTrue: [ self selectedClass: nil. self updateClassView ] ifFalse:[ self selectedPackage: receiver. self selectedClass: aClass. self updateBothView ]]]