Upgrading Drupal

1. i don`t run cron manunually

run cron print massage

Fatal error: Call to undefined function xmlsitemap_flag_sitemap() in /home/content/A/t/a/Atanasoski/html/modules/xmlsitemap/xmlsitemap_user/xmlsitemap_user.module on line 37

..in status report

2.Cron maintenance tasks Last run 10 weeks 4 days ago
Cron has not run recently. For more information, see the online

Hi guys,

I'm taking over a website for a client that is runing under drupal 5. but the website is a big mess.

A bunch of modules installed but not enabled,
the contributed modules are mixed with the core ones, same for the themes.

The update php returned me these

"The following queries were executed
system module
Update #1022

* Failed: ALTER TABLE {users} ADD KEY created (created)

comment module
Update #1

* No queries
"

are these bad?

I am trying to upgrade from 5.5 (according to my Status Report Page) to 6.14.
I have read the documentation, watched the video, and upload the files via ftp to my IP
When I updated 5.x -6.x the first time, when I tried to find my site I got a broken link message so I deleted the new files and restored the old (all was well). The second time I updated from 5.x 6.x I found my site but, it was just 1000's of lines of text with my images here are there. I have since restored to the older version.

Obviously, I missed something critical. Any assistance would be helpful.

I just upgraded to the newest security update and was wondering: Do we really need to replace all core files?

I just did an upgrade without touching the SITES folder as well as the htaccess file and Theme Folder.

am I right? is what I did alright?

tnx,
DP

Upgrading the version and understanding drupal a bit better, I would like to move the modules from
/modules
to
sites/all/modules

Moving is not the problem... :-) But where to enter the directory? What table or file?
Any hints are appreciated!

I upgraded from Drupal 6.13 to 6.14 and since then the following simple code:

            $conn = mysql_connect("localhost","root","qu1losap");
                if (!$conn)
              {
                  die('Could not connect: ' . mysql_error());
              }
       
            mysql_select_db("starlab_db", $conn);
            mysql_close($conn);

gives the following warning: