Actionscript 2 Guru needed!

Hey Guys;
Seems like you guys are the actionscript gurus round here…
Ive got this flash movie that imports an xml file and then draws out a navigable grid
based on this data.It was working but now Im getting errors within the classes when I try to compile/publish it.
Its probably something simple as Im new to the whole MX 2004 /AS 2.0 scenario…

If you could have a look at the code and see what little mistake im making itd be great!