This bug is currently occurring in the latest release ( 12.04 ),
This looks like a problem with usbcreator/backends/base/backend.py not running the /backends/base/backend.py:140:_update_free function if the target has been flagged as either NEED_FORMAT or CANNOT_USE.
By running the /backends/base/backend.py:140:_update_free function it forces the recalculation of size requirements of the sources vs the size of the target and then updates the GUI to show that the target is acceptable.
This bug is currently occurring in the latest release ( 12.04 ),
This looks like a problem with usbcreator/ backends/ base/backend. py not running the /backends/ base/backend. py:140: _update_ free function if the target has been flagged as either NEED_FORMAT or CANNOT_USE.
By running the /backends/ base/backend. py:140: _update_ free function it forces the recalculation of size requirements of the sources vs the size of the target and then updates the GUI to show that the target is acceptable.