On 28.08.2015, at 09:52, marcel.taeumel <Marcel.Taeumel at hpi.de> wrote:

> Not good for old projects... :-/ Anyway, we might get rid of this DNU trick
> completely...

Right, but several old things expect a false instead of nil when the pref is absent.
Metacello's bootstrap expects an error that is beeing catched…

best regards
	-tobias