[Pharo-project] Can't load OSProcess in last Pharo Core 1.3

Hi all, I just tried to load OSProcess in the last PharoCore 1.3 (I took it from hudson). It fails when it tries to add ThisOSProcess to the startup list with: Smalltalk addToStartUpList: ThisOSProcess after: ImageSegment. in ThisOSProcess class>>initialize. It seems that ImageSegment is not in the StartUpList anymore. Is that normal? Adrien.