I’ve solved.
Listening to _ck_, I’ve worked a little around the settings in the database. I found that some settings are stored in the bb_topicmeta table. There are some records with topic_id “0”. Obviously there are no topics with id 0 – so I deduced that are general settings.
I’ve just took the values generated by the fresh installation and put them in the old database. Now everything works fine.
Thank you all for help; particularly to _ck_ that sent me to the right way.
Bye bye!
Oh.. Can you tell me where are this setting in the database?
BBPress doesn’t see the user logged anyway.
Mmh, but I reinstalled BBPress, and then it worked right until I’ve uploaded again the old database. So I thought that the cookie hash, if corrupted, was fixed by the reinstall process. Isn’t right?
Mmh, I integrated users, cookies, everything I found on BBPress installation.
Mmh, I don’t think are cookies; I tried to reinstall everything, after all!
Thank you, I’ll try to look in the database; anyway, it seems strange to me: it’s the login/registration that doesn’t work – posts and topics are alright.
I’ll try and then report here!
Thanks again! ^^