Yes, it was! The code was in the library.
When you offer your code for others to look at, it's a good idea to describe what the code does - "first it loads some data from XML, then when you click one of the buttons it makes a new instance of either customerLogin or regPage." It's not fair to kows (or anyone) to expect him to go find your code. (Also there's no "regPage" object in your library - should it be registrationPage?)

In any case, I don't get what the mystery is at this point: the URLs in your Actionscript don't appear to exist. It doesn't matter if your code's correct when the code's not there.