If you’ve been using InstaDMG to create compiled modular deployment images, you may find it takes some work to get it to work with Mavericks.
Might I suggest a look at AutoDMG?
Works great to build Mountain Lion and Mavericks modular images; comes with a GUI(!) but usable from the command-line as well if you want to automate it!
Congratulations to MagerValp (Per Olofsson) on an excellent tool. It’s still in early development, but is shaping up very quickly.