Course Creators cannot restore a course in Moodle 1.6.1 and 1.6.2+ up to 2006-09-27.
The restore process fails, because the course creator cannot be assigned as teacher to the newly created/restored course.

Reason:

Line 5347 and folllowing in restorelib.php:

if (!isadmin()) {
if (!$checktea = get_records('user_teachers','course', $restore->course_id))

{ //Add the teacher to the course $status = add_teacher($USER->id, $restore->course_id); }

}

The Variable $USER is not declared as global in the function restore_execute, so add_teacher is called with an empty user-id.

Suggested Solution: add global $USER to funtion, for example:

if (!isadmin()) {
if (!$checktea = get_records('user_teachers','course', $restore->course_id))

{ //Add the teacher to the course global $USER; $status = add_teacher($USER->id, $restore->course_id); }

}