I build mozilla-central trunk on Windows 7 using VC2010 and MozillaBuild 1.9.0. I build both the hg tree and the gecko-dev git tree and both show the same problem. When I want to produce a package for testing on other machines I issue 'mach package' and it seems to do well until after a short while it just stops and hangs for what seems to be forever and I've had to control-c it. See attachment for a full log but I guess the end of it is the most interesting. Is there a description somewhere for how this is supposed to work or what I can do to track this down further?

You can just copy (zip/unzip if you need) obj-dir/dist/bin and unpack it on another machine. That should work (for me usually does). Also a try build with your patches can give you an installer if you don't do too frequent code changes. I can see some ENSURE_SUCCESS failures in the log. Does mach package work w/o any local patches?

I noticed I had some hanging processes in the system that might explain this behavior. I killed them and I could run it fine with an unmodified source code. Problem was thus mine. Thanks anyway!