Upgrading Drupal

How can I correct this error that appears immediately after update.php? Thanks

Hi guys. I've recently tried to upgrade to Drupal 7.8 from 6.22 by going step by step using the Upgrade.txt included in the Drupal 7.8 zip file. Now, Out of the 137 updates which needed to be done. 57 ran smoothly.

Hi
Was updating Drupal Core from 6.20 (I seem to remeber) to the latest version of Drupal 6
As normal, I substituted the files in my FTP from the existing ones to the new ones as downloaded from Drupal.org
However, on opening my site, I get the error message:

Fatal error: Call to undefined function user_access() in /home/content/35/7843335/html/includes/menu.inc on line 449

(on www.pickeringrc.com )

Hello. Let me just start by saying, I am very new to this. My question is pretty simple. I would like to upgrade my drupal from 6.22 to 7. I am clear on how to do it. My problem is there is a forum on the 6.22 version where I want to keep all the registered users and posts, and I just want to make sure when I upgrade this is possible. Are there any special steps I need to take?

Thanks!

Hi,
I'm trying to upgrade a 6.20 Drupal site. I managed to upgrade it to 6.22 easily enough in preparation for moving up to 7.x. I follow all the steps, namely:
Put site into maintenance mode
Turn off all modules except core
change theme to garland
move the new version onto the server
rename settings.php and alter permissions

I'm not able to upgrade Core from a Drupal 6.16 installation. This is on a multisite, and the "parent" installation has folders for versions of Drupal going up to 6.22.

The update.php seems to run fine, throwing no errors, but when I return to the
admin/reports/updates
I see that no changes have been made to Core.

I've tried:

• Clearing Drupal cache
• Clearing browser cache
• Croning my heart out

I have read #1180344: Drupal not recognizing core update and particularly the comment linked below, where the system table is often the culprit for linking to modules/themes in old Core installation folders. This is not the case for me.
Comment 10 - Cron keeps asking for 6.22 after 5 times installing 6.22

Upon inspection, and querying
SELECT * FROM `system` WHERE `filename` LIKE "sites/all/modules/drupal%";

I see that the modules are not linked improperly. Instead they appear, for example, as:
sites/all/modules/cck_time/cck_time.module

So the system table seems to be fine, it's straight not updating Core. I haven't been granted full access to the parent installation, but if I gain steps and procedures, I hope to be able to walk our IT guys through any changes that need to be made in the "parent" installations.