"burn the selection of files across several media" (spanning) does not work

Binary package hint: brasero

I am trying to write a directory of image files to CD. The files are of around 3MB to 6MB each, and the overall data size is greater than will fit on one data CD.

If I drag and drop the files into brasero (normally via its integration with gnome) and then click Write to Disc, the size estimation process runs and Disc Burning Setup tells me that there is not enough free space on the CD-R and asks if I would like to burn the files across several media. I then click the Burn Several Discs button. In the next window I press Burn.

I would expect the program to prepare and write the first CD and then prompt me to exchange it for a new blank and continue to write files to that.

The Burning CD window appears, and an image is created. At the end of the image creation process an error message tells me that "An unknown error occurred". The log file ends with the line "Session error : unknown (brasero_burn_record brasero-burn.c:2811)".

This behaviour is exhibited by both a 32 bit and a 64 bit system, using Ubuntu 9.10 (karmic) with brasero version 2.28.2 from Karmic-updates.