Hi guys when working on a new morphic kernel, we got stuck with a really difficult to find bug (we are still looking for it). If new generation debugger lovers want to try. Here it is - load the bloc version 6 from AlainPlantec/Bloc on smalltalkHub - execute the snippet (alain will post the snippet because it is on his machine) BlProtoMorph new openInWorld (there is another one) - move the mouse and the system gets blocked. After looking for it for a couple of hours here are some wishes list. - would be good to be able to set a haltOnce to **all** the methods of a **particular** object :) - would be good to have the equivalent of GlobalVaHoldingOneObject haltOnce ifTrue: [â¦.] - would be nice that we can say that the object once debugged does not receive any other messages (imagine an object in a fast rendering loops and that one message causes problems). Stef