[Pharo-project] pharo0.1-10373dev09.07.2: load Exupery-wbk.341 -> MOAbstractLayout missing

Dear List, I tried to load Exupery-wbk.341 in pharo0.1-10373dev09.07.2, #10377. I received a popup: This package depends on the following classes: MOAbstractLayout You must resolve these dependencies before you will be able to load these definitions: MOGraphVizLayout MOGraphVizLayout>>doExecute: MOGraphVizLayout>>findTopLeftCorner: How do I solve this? Cheers, Andreas