I found the problem. I though 1.3 and 1.4 Symfony were the same, so i was trying install sfDoctrineGuardPlugin in 1.4 but it seems doesn't work.
I replace the 1.4 to 1.3 and solved the problem -- You received this message because you are subscribed to the Google Groups "symfony users" group. To post to this group, send email to symfony-us...@googlegroups.com. To unsubscribe from this group, send email to symfony-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/symfony-users?hl=en.