by Andrzej Tokarski.
Hi, I have the same problem with moodle 2.7 from very beginning. Every time I try to restore the course - the following info appears: "Thrown by backup/util/ui/restore_ui_stage.class.php:157
The requested file does not exist in temp/backup."
It seems that it is the problem of moodle 2.7 but not the case of upgrading from 2.6 to 2.7.
Can you explain more directly how you solved the problem and which config needs changing and in what way.
I would be grateful if you could tell me which part of the code needs changing and to which version of the code.