Problems burning DVD MacBook Pro 10.4.11

[ScKaSx]

Hi All,

So I put in a burnable DVD and it pops up on my desktop. I open it and drag the files in that I want to burn. If I name the DVD at this point, anything other than 'Untitled DVD' I get the following error message after several minutes of pause:

Sorry the operation could not be completed because an unexpected error occurred
(Error code - 536870198).

Anybody understand whats happening here?

Cheers,
ScKaSx