Sorry for taking a while to reply, I got to see snow for the first time in five years this weekend...
Anyway a default view showing all files did the trick! Thank you.
Just in case it helps, the reason for this is to create a project management site. Being the Gant view for project tasks doesn't seem to allow web part connections or parameters, each project has its own folder. I then make use of the RootFolder
query string to create items in the correct folder, same again I use RootFolder for displaying only the current projects tasks. I then wanted a cascading lookup to show only the current projects summary tasks within a drop down.
Its nearly working a treat, I just need to add an additional CAML query to show only the Summary Task content type.. So thanks again to everyone.