Hi,
This is because you exported all your settings previously and in the meantime, this particular setter has changed to cacheDirectory:. This is a systematic problem with the current setting mechanism and we will have to deal with it after the Pharo 4 release. To circumvent the problem for now, I have added a backward compatible customDirectory: setter.
It is available in the latest GT-Playground and will be integrated in Pharo 4:
Name: GT-Playground-TudorGirba.110
Author: TudorGirba
Time: 11 April 2015, 2:18:59.123037 pm
UUID: 58b68605-0af7-4854-be65-b3cda2385cef
Ancestors: GT-Playground-TudorGirba.109
introduced customDirectory: for backward compatibility
Cheers,
Doru