Version:           0.12.3 (using KDE 3.4.2 Level "b" , SUSE 10.0)
Compiler:          Target: i586-suse-linux
OS:                Linux (i686) release 2.6.13-15-default

After choosing New DVD project, selecting files and pressing the burn button, the following message occures:
 
System
-----------------------
K3b Version: 0.12

KDE Version: 3.4.2 Level "b" 
QT Version:  3.3.4
Kernel:      2.6.13-15-default
Devices
-----------------------
_NEC DVD_RW ND-2500A 1.06 (/dev/hdb, ) at /media/dvdrecorder [CD-R; CD-RW; CD-Rom; DVD-Rom; DVD-R; DVD-RW; DVD+R; DVD+RW] [DVD-Rom; DVD-R Sequentiell; DVD-RW Eingeschränktes Überbrennen; DVD-RW Sequentiell; DVD+RW; DVD+R; CD-Rom; CD-R; CD-RW] [SAO; TAO; RAW; SAO/R96P; SAO/R96R; RAW/R16; RAW/R96P; RAW/R96R; Eingeschränktes Überschreiben]

TOSHIBA DVD-ROM SD-M1712 1004 (/dev/hdd, ) at /media/dvd [CD-Rom; DVD-Rom] [DVD-Rom; CD-Rom] [Keine]
K3b
-----------------------
Size of filesystem calculated: 0

Used versions
-----------------------
mkisofs: 2.1

mkisofs
-----------------------
Incorrectly encoded string (lck.tif) encountered.
Possibly creating an invalid Joliet extension. Aborting.