Take the tour ×  I'm fighting with OSX's packageMaker as it
doesn't allow me to create a '.pkg'. Instead it's forcing me to
make a '.pkg.mpkg'.  This seems like a stupid question I should
be able to respond with a couple of google searches, but I'm not
being able to find much info about this.  Could anyone explain
the main differences between them and if you know the
restriction for which you have to use one or the other?
share|improve this question add comment  3 Answers  up vote 9
down vote accepted  To the best of my knowledge, .pkg files are
simple, straightforward Installer packages. However, .mpkg files
are very customizable, and can link to multiple .pkg files which
the end user can turn on and off in the Installer.  I think the
.pkg.mpkg double-extension you're seeing is just a text
appending issue. Packages are either .pkg or .mpkg, not a
combination of the two.  share|improve this answer You're right,
I can't believe I was so dumb for not catching that one. +1 I'm
still looking for an answer in the