Upgrading Drupal

I just upgraded to Drupal 6 using Greggles video, but it didn't go as smoothly as his example did. The first reason for this is because apparently my host (or something on my end) has it so that if a folder is replaced, it deletes the contents before copying it over - meaning I lost all of my settings and modules. That's not a huge deal since I made a back up, but after running the update script I got the following errors at the top in red:

* user warning: Table 'cache_form' already exists query: CREATE TABLE cache_form ( cid varchar(255) NOT NULL default '', data longblob, expire int NOT NULL default '0', created int NOT NULL default '0', headers text, serialized int(1) NOT NULL default '0', PRIMARY KEY (cid), INDEX expire (expire) ) /*!40100 DEFAULT CHARACTER SET UTF8 */ in /home/foo/public_html/modules/system/system.install on line 1399.

Site was working well on 6.6. Upgraded to drupal 6.8 last night. Things looked OK after the upgrade. Started getting complaints form users this morning that the screen "looked funny". There is NO CSS styling whatsoever. Typing in the URL of the style sheets brings up a drupal "page not found" page! Please help! Site is http://www.starastronomy.org

Hi

I upgraded my website from 5 to 6 version , i put it on offline setting as written , but now it doesn't allow me to login

how to change offline to online from back end database , in which table it is?

i tried to login from http://www.yoursite.com?q=user but it didnt worked

Thanks

Here is the error i have
warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, 'webform_node_form' was given in /var/www/html/mbsys/includes/form.inc on line 366.

Another user did the original upgrade from drupal 5->6 occurred a long time ago. Apparently it caused this problem. I have since upgraded to 6.8 but the problem persists.

I have pathauto installed so i assume that is what makes all my path names friendly based upon a title. Now every time I save a page the path name turns into some generic site/node/# instead of something like site/about-us

I get this error every time I save a page:

Here's a list of files changed by the latest Drupal upgrades. We use this so we don't have to replace the entire Drupal installation, as usually only a few specific files have actually changed.

Files Changed by Drupal Upgrades - simply select the list pertaining to your Drupal installation.

Cheers,
Alex