Re: Moodle 2.7 fresh install fail

I download from moodle.org. and

grep -rn 'class lesson ' *
mod/lesson/locallib.php:895:class lesson extends lesson_base {

if i delete de mod/lesson directory all works, but i need lesson in my moodle.

Some sugestion??

Regards Diego

PD: I use postgress db and apache+php in ubuntu server!