go to post Pete Greskoff · Aug 5, 2016 You should not be using $zu calls directly, as these are internal and subject to change. As Alexander suggested, you should use $zf(-1) (or $zf(-2))
go to post Pete Greskoff · Jun 8, 2016 It sounds to me that something could be wrong with the parent process of the one you are trying to kill. If you haven't already, I strongly suggest opening a WRC issue for this. It would be worth trying to get a trace (ltrace or strace) of both this process and the parent to see what is going on at the OS level.
