The err-message brasero gives, says that the space on the device, where the image is crteated, is too small, and one can chose Cancel/Use-same-Dir-again/Chose-different-Dir.

But to chose a different dir does NOT help.
The same message and options/buttons appear again.

To chose a different directory seems to be the output directory of the (to be) created image.
But that directory had enough free space.

It was a too small /tmp which created a problem.
So, not only the message is wrong, but also the possible actions to chose from do not help.
So, the only working option (out of three) is to cancel the task.
Which means, the work can't be done.

At least the error-message should be correct.
And: if it is not possible to change the TEMP-dir, then also no menue to select a new dir should be displayed.
That does only help, if the destination-dir (not the /tmp) is too small.


At least the message should be corrected, to say, that the /tmp has too less space left over.
Changing the temp-dir from /tmp to an arbitrary other dir would be nice.


The problem (Bug 578733) is from 2009 and it's marked as fixed.
But it's still (or again?) there.