Status: Accepted Owner: marcus.d...@gmail.com Labels: Milestone-1.2-DevImage Importance-High New issue 3760 by marcus.d...@gmail.com: Build 1.2 Fails due to Mock package http://code.google.com/p/pharo/issues/detail?id=3760 Solution: Remove the package that is the problem. THERE_BE_DRAGONS_HERE MessageNotUnderstood: receiver of "evaluateMessageSend:" is nil 25 February 2011 5:41:49 pm VM: unix - i686 - linux - Squeak4.1 of 17 April 2010 [latest update: #9957] Image: Pharo1.2rc2 [Latest update: #12338] SecurityManager state: Restricted: false FileAccess: true SocketAccess: true Working Dir /builds/workspace/Pharo 1.2/Pharo-1.2-AfterRunningTests Trusted Dir /builds/workspace/Pharo 1.2/Pharo-1.2-AfterRunningTests/secure Untrusted Dir /builds/workspace/Pharo 1.2/Pharo-1.2-AfterRunningTests/My Squeak UndefinedObject(Object)>>doesNotUnderstand: #evaluateMessageSend: Receiver: nil Arguments and temporary variables: <<error during printing> Receiver's instance variables: nil MockObject>>evaluateMessage: Receiver: <<error during printing>> Arguments and temporary variables: aMessage: someMessage Receiver's instance variables: <<error during printing>> MockObject(MocketryProxy)>>doesNotUnderstand: #someMessage Receiver: <<error during printing>> Arguments and temporary variables: aMessage: someMessage Receiver's instance variables: <<error during printing>> [mock1 someMessage] in [[mock1 someMessage] fork. Processor yield] in MessageContextSpecAcceptanceTests>>testShouldBeAsynchronousIfMessageInOtherProcess Receiver: MessageContextSpecAcceptanceTests>>#testShouldBeAsynchronousIfMessageInOtherProcess Arguments and temporary variables: Receiver's instance variables: testSelector: #testShouldBeAsynchronousIfMessageInOtherProcess mock1: nil mock2: nil [self value. Processor terminateActive] in BlockClosure>>newProcess Receiver: [mock1 someMessage] Arguments and temporary variables: Receiver's instance variables: outerContext: [[mock1 someMessage] fork. Processor yield] in MessageContextSpe...etc... startpc: 55 numArgs: 0 --- The full stack --- UndefinedObject(Object)>>doesNotUnderstand: #evaluateMessageSend: MockObject>>evaluateMessage: MockObject(MocketryProxy)>>doesNotUnderstand: #someMessage [mock1 someMessage] in [[mock1 someMessage] fork. Processor yield] in MessageContextSpecAcceptanceTests>>testShouldBeAsynchronousIfMessageInOtherProcess [self value. Processor terminateActive] in BlockClosure>>newProcess