cannot burn cd using cd/dvd writer

CD/DVD works fine playing media.
Using Nautilus to try to write a directory to a writable CD fails.
Here's what happens:
Insert a blank disk.
The "Choose Disk Type" dialog pops up and I select Make Data CD.
The CD/DVD creator file browser comes up and I drag the folder that I am interested in to the window.
I click the Write to Disc button.
An empty "Write to Disc" window comes up and that's it. No other messages or further progress.

I downloaded brasero and ran it from the command line and it worked, although it did have this error message:

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~$ brasero

(brasero:6189): Pango-CRITICAL **: pango_layout_set_markup_with_accel: assertion `markup != NULL' failed
I/O warning : failed to load external entity "/home/olsen/.gnome2/brasero.session"
gnome-mount 0.6
Device /dev/scd0 is in /etc/fstab with mount point "/media/cdrom0"
Ejected /dev/scd0 (using /etc/fstab).
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I am running gutsy gibbon:

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$ uname -a
Linux olsen-hp-laptop 2.6.22-14-generic #1 SMP Sun Oct 14 23:05:12 GMT 2007 i686 GNU/Linux
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This may also help?:
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/usr/lib/nautilus-cd-burner/list_cddrives
gnome-mount 0.6
Device /dev/scd0 is in /etc/fstab with mount point "/media/cdrom0"

** (gnome-mount:6289): WARNING **: /bin/umount said error 512, stdout='', stderr='umount: /media/cdrom0 is not mounted (according to mtab)
'

Drive:
  name: DVDRAM GSA-T20L
  device: /dev/scd0
  door: closed
  type: CD-R, CD-RW, DVD-RAM, DVD-R, DVD-RW, DVD+R, DVD+R DL, DVD+RW, CD, DVD
  is mounted: FALSE
  max read speed: 4234 KiB/s (CD 28.2x, DVD 3.1x)
  max write speed: 4234 KiB/s (CD 28.2x, DVD 3.1x)
  write speeds: 4234 KiB/s (CD 28.2x, DVD 3.1x)
                        2822 KiB/s (CD 18.8x, DVD 2.0x)
                        1764 KiB/s (CD 11.7x, DVD 1.3x)
                        706 KiB/s (CD 4.7x, DVD 0.5x)

Media:
  label: ''
  type: CD-R (blank)
  is writable: TRUE
  is appendable: FALSE
  capacity: 701.00 MiB approx. or 80 mins 0 secs
  size: 0.00 MiB approx. or 0 mins 0 secs
---
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Thanks