Hi, in latest Pharo 6 image 60494 I run into some trouble today where the deprecation warning dialog popped up and repeated itself unstoppable due to Epicea. It is hard to reproduce but what I found out was that I had a class modification (represented by EpClassModification) which run into a state where "newClass" was nil and therefore in EpClassModification>>#behaviorAffectedName the message #name was sent to nil. So #name was found in Object and as we all know we deprecated it now which lead to the deprecation dialog, leading to the deprecation dialog, leading to the deprecation dialog, ... Nearly all implementors of Epiceas #behaviorAffectedName send #name which is ok if there is a valid object it is sent to. I do not know if we should protect them somehow in case something goes wrong (like having nil in newClass) or if we should keep this untouched. At least I wanted to inform because I do not know if this later gets others into trouble too and losing their changes because Epicea does not record. Thanks T.