Flash & XML on a new VPS

can someone explain why this is happening?

If you go to:
http://www.lisacarol.com

The flash in the website works perfectly and calls the XML data.

If you go to:
http://lisacarol.com

The flash doesn’t load the XML data.

The server is set to handle both the www.name.com & name.com but for some reason it’s not passing the data properly when the www is left out.
The flash calls upon the XML from a relative path …/file/filename.xml

I can only assume this has to do with a setting in my VPS because it worked when the files were on a shared hosting plan.

I’m using Plesk 8.2.1