k3b can't determine size of resulting image file

Screenshot!

I've done this and still doesn't work:

kmos@bash:~$ wodim -scanbus
scsibus1:
        1,0,0 100) *
        1,1,0 101) 'HL-DT-ST' 'DVDRAM GSA-4167B' 'DL13' Removable CD-ROM
        1,2,0 102) *
        1,3,0 103) *
        1,4,0 104) *
        1,5,0 105) *
        1,6,0 106) *
        1,7,0 107) *

Now the screenshot..

i try to burn a dvd with an avi file and then i get the following results:

K3b Version: 0.12.17

KDE Version: 3.5.5
QT Version: 3.3.6
Kernel: 2.6.17-11-generic
Devices
-----------------------
AOPEN DVD1648/AAP PRO 1.01 (/dev/hda, ) at /media/cdrom0 [CD-ROM; DVD-ROM] [DVD-ROM; CD-ROM] [None]

TSSTcorp CD/DVDW SH-S182M SB03 (/dev/hdb, ) at [CD-R; CD-RW; CD-ROM; DVD-ROM; DVD-RAM; DVD-R; DVD-RW; DVD-R DL; DVD+R; DVD+RW; DVD+R DL] [DVD-ROM; DVD-R Sequential; DVD-R Dual Layer Sequential; DVD-R Dual Layer Jump; DVD-RAM; DVD-RW Restricted Overwrite; DVD-RW Sequential; DVD+RW; DVD+R; DVD+R Double Layer; CD-ROM; CD-R; CD-RW] [SAO; TAO; RAW; SAO/R96P; SAO/R96R; RAW/R16; RAW/R96P; RAW/R96R; Restricted Overwrite; Layer Jump]
K3b
-----------------------
Size of filesystem calculated: 0

mkisofs
-----------------------
/usr/bin/X11/mkisofs: Warning: -follow-links does not always work correctly; be careful.
Warning: Disabling Joliet support for DVD-Video.
/usr/bin/X11/mkisofs: No such file or directory. Faild to open /tmp/kde-root/k3bVideoDvd0//VIDEO_TS/VIDEO_TS.IFO
/usr/bin/X11/mkisofs: Can't open VMG info for '/tmp/kde-root/k3bVideoDvd0/'.
/usr/bin/X11/mkisofs: Unable to parse DVD-Video structures.
/usr/bin/X11/mkisofs: Unable to make a DVD-Video image.
/usr/bin/X11/mkisofs: Warning: -follow-links does not always work correctly; be careful.
Warning: Disabling Joliet support for DVD-Video.
/usr/bin/X11/mkisofs: No such file or directory. Faild to open /tmp/kde-root/k3bVideoDvd0//VIDEO_TS/VIDEO_TS.IFO
/usr/bin/X11/mkisofs: Can't open VMG info for '/tmp/kde-root/k3bVideoDvd0/'.
/usr/bin/X11/mkisofs: Unable to parse DVD-Video structures.