I have several Drupal sites and have been trying to upgrade to v6.2 from 5.x. Two are on hosted sites and very similar in terms of mods used.
Site 1 - after lots of work (retries) - I was able to convert successfully - apparently without a problems despite lots of "errors" getting listed along the way. I continued to run update.php and finally everything worked. I used the old hammer approach...close ones eyes and keep hammering away on the keyboard.
I can't use OpenID, because of an error (see other post) , so i have to log in the old fashion way. I don't know the password so I run through the forgotten password routine.
I get the email
I click the link
I press the "login" button on the web page
I get Access Denied
Drupal database update
warning: array_pop() [function.array-pop]: The argument should be an array in /home/smoothja/public_html/update.php on line 315.
The update process was aborted prematurely while running update # in .module. All errors have been logged. You may need to check the watchdog database table manually.
I followed everything in the UPGRADE.txt file, and I'm upgrading from 6.1 to 6.2.
My upgrade went ok and "most" everything works fine...Except for TinyMCE.
I had it installed before the update and I disable the module and uninstalled it.
I then downloaded the latest for 6.x and the lastest JS from the tinymce website.