Re: Upgrade Errors: It looks like your database is out-of-date.
The renaming of the directory only come into play when you have an existing installation, and you change that folder name (some people install in http://www.example.com/bbpress/ and then realize later that path is accessible on visible, so they change it to “forum” or “discussion” or “community” or whatever.) The problem is, that folder name was stored in the database as part of the site URI (I think) so you are unable to access the forum in the new folder, since the database thinks the installation is somewhere else (original location.)
You can override the site URI in the bb-config.php (it’s not there in the 1.0 bb-config.php, but it is there in the 0.9 and earlier config, I think):
$bb->uri = 'http://www.example.com/forum/' (or change forum to the folder name that exists in your database. This line in bb-config.php will override the database.)
Also, it’s worth looking at the changes between bb-config.php from the 0.9 version to the 1.0 version. I have noticed with WordPress that even though you upgrade several times, you are left with the old existing wp-config.php and missing out on all sorts of stuff (like the security keys and cookie stuff from 2.7). Worth a shot to try your old database connection details in the bb-config-sample.php and see how it goes.
Also, is this a LAMP setup with PHP5, Apache, Linux, etc or is it OSX or Windows? Or localhost? Most installations are on LAMP so that’s the most likely help to find here.
