Hi, I have upgraded my libvirt version, and I have a crash using ruby-libvirt (0.4.0). The same code ruby worked well before upgrade. ruby(92500,0x107092000) malloc: *** error for object 0x7fdc03ea7658: pointer being freed was not allocated *** set a breakpoint in malloc_error_break to debug Abort trap: 6 I'm under Mac Os, but my colleague is under Linux and have the same problem. Any idea ? Any information to how diagnosis the problem ? Regards, Bertrand