No longer notifies the user that the ISO is invalid.
Binary package hint: usb-creator
The version of usb-creator in karmic no longer notifies the user that the ISO is not casper-based, and thus not usable. It simply does not add the ISO to the source list. This is a regression from 9.04.
The message should note in simple terms what kind of CDs are supported without resorting to defining casper.