I just tried to update my old 2.2 Wordpress to 2.3 I deleted all the files on my server and uploaded the new files and for some reason I am getting errors and I cant find my categories. Will buy a drink for anyone who can help me solve this issue The site is reviewmydomain.com
If by "I cant find my categories" you mean you get 404s then it's the .htaccess - create a new one. The rest would be plugins etc. By the way the way to update WP is not deleting all files and installing the new ones, but overwriting all the files so you can keep your themes and plugins.
And did you used the same database, db user and password for the new installation? If yes, than as maiahost suggested check the htaccess
ermmm. I just tried to upload the old 2.2 version again and nowe I get this: "Warning: main(/home/reviewmy/public_html/wp-includes/wp-db.php): failed to open stream: No such file or directory in /home/reviewmy/public_html/wp-settings.php on line 100 Fatal error: main(): Failed opening required '/home/reviewmy/public_html/wp-includes/wp-db.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/reviewmy/public_html/wp-settings.php on line 100" now what ?
why delete all the files? check db connection, place it again and re-upload the files, before upgrading to 2.3 be sure to check the plug-ins upgrade too.
it seems like you having problem with your theme. make sure that your theme support v2.3.1 wp 2.3.1 uses new tables. -cypher.
I guess you're right..acually even I'm having problems since the day I upgraded to 2.3.1. As soon as I push publish it shows a weird page full of sql errors. But in the end..the post does publish!