API Call Error Messages

I am currently building an Adobe Flex interface for PIWIK, So far things have been going well however I am currently running into the following issue.

When calling the ‘referers’ module, I am getting the following error back in XML format.

Does anyone know what this might be? I have checked the obvious and the Referers plugin is activated.

I cannot progress any further, all the relevant parameters for the API seem to be correct?

Hope you can help.

Ben

Isn’t it case sensitive?