Hi Thierry, when using beans, I get the following warning when accessing my Wordpress site (even with default beans template) with DEBUG enabled:
Notice: Trying to get property of non-object in /home/user/public_html/wp-includes/comment-template.php on line 1153
This happens when there is no existing post in my blog.
I think there is some test missing in beans somewhere, but I am not sure.
The next beta release is planned for next week and stable the following if everything goes to plan.