Unmounting and remounting the CD (ISO image via vbox) makes the promt appear as expected.
My procedure for causing the original problem:
1. Install Ubuntu intrepid in vbox
2. shut down and point vbox at the edubuntu add-on CD
3. Booting the machine mounts the CD and places an icon on the desktop, but right clicking leads to the failures described above
Unmounting and remounting the CD (ISO image via vbox) makes the promt appear as expected.
My procedure for causing the original problem:
1. Install Ubuntu intrepid in vbox
2. shut down and point vbox at the edubuntu add-on CD
3. Booting the machine mounts the CD and places an icon on the desktop, but right clicking leads to the failures described above