Preloading XML from an External SWF File

Hello Everyone - first time poster here!

So I’ve built a great tool that uses a ginormous xml database (about 50 MBs)… to my surprise, the XML file loads relatively quickly with a fast connection.

The thing is, I have an external swf doing the preloading of the main file (and it is doing a fine job)… but it loads everything except for the database…

Any ideas on how to get this to work?
Thanks!