Greg Parker: Go back to the board. Symptom: the object was allocated as an NSPathStore2. Symptom: the object’s isa pointer is now 0xa0050000, which is not NSPathStore2. What should the isa pointer’s value have been? otool and objc_getClass() agreed: the correct isa pointer should have been 0xa005f198. 0xa0050000 is suspiciously similar. Theory: something had cleared … Continue reading Dr. Gregory Parker, Department of Diagnostic Engineering