This bug affects me also. I'm using Kubuntu 11.10 and getting the same output in k3b when I try to burn in a DVD-RW medium "/usr/bin/wodim: Cannot open new session.".
I was able to burn the same iso file using the same medium, OS, and drive using the following command: growisofs -dvd-compat -speed=2 -use-the-force-luke=bufsize:32m -Z /dev/dvdrw=/path/to/the/file.iso
This bug affects me also. I'm using Kubuntu 11.10 and getting the same output in k3b when I try to burn in a DVD-RW medium "/usr/bin/wodim: Cannot open new session.".
I was able to burn the same iso file using the same medium, OS, and drive using the following command: growisofs -dvd-compat -speed=2 -use-the- force-luke= bufsize: 32m -Z /dev/dvdrw= /path/to/ the/file. iso