Delivery and packages

I am confused about how the package of my application affects delivery. 
Do I have to do anything special to deliver if my system is in a package 
of mine instead of cl-user? If I don't change to the package before 
calling deliver, deliver fails because it cannot find my function.

Here is one of the deliver.lisp files I have tried:

(in-package "CL-USER")
(load-all-patches)
(compile-file "foo" :load t)
(deliver 'foo-fn
          "d:/foo"
          0
          :interface :capi
          :keep-complex-numbers nil)

The deliver log has "++++ Error between functions: Package FOO not found"

Mitch