Upgrading Drupal

Dear all,
I upgraded Development module by replace the existing Development Module folder under ../all/site/module, Drupal suggest me to update the database. After I finish updating the database I got these following errors:
1.

Invalid argument supplied for foreach() in /var/www/htdocs/drupal-6.17/update.php  on line 338.

2.

Hello.
I have update some modules: views, views-slideshow, nodereference, (all except CCK, wich is in v2.5).

I have content types with nodereference fields (reference to users, and reference to othes nodes).
In this fields, I select a view to use, and when users create content, they can pickup and select and item of this view to fill the field.

But after update, when I pickup de combobox, the view is blank. You can see the correct number of rows, but all in blank.
Can some on help me?

Hi
I have been updating my modules at a site and thought it would be a simple thing... but now I ran into a problem I have no idea how to solve.
I have updated all modules that needed to be updated and then I logged out.
When I returned it gave me an error and I could at first not access the site at all.
I deleted the Module folder on the server and replaced it with my backup of all the old modules and replaced those that needed to be updated with the new versions.

So I got the message that I needed to update to Drupal 6.17 a while back but thought I would ignore it as upgrading seemed like more then I could handle at the time. Yesterday I thought I would be brave and give it a try. I read as much as I could for troubleshooting but I am pretty new so a lot of the terms are a little foreign.

I have upgraded to Drupal 6, but the images with paths relative to the files directory are not visible on my site (those with absolute urls are visible).
Drupal does not complain ('Image module directories Exists (klimafiles/images). ) though the files directory is not inside the sites/default directory but in public_html where Drupal core is. This worked without problems in D5 on another server. How can I get my images visible again?

Hello !
To organize the galleries on the site I use the module "Image". Site in 3 languages.
The problem with list of galleries.
In default language all is well: the last photo, the number of photos in the gallery.
But when it goes into another language, then all the galleries are displayed as empty "There are 0 images in this gallery".
But when I click to view this empty gallery, it opens and it has pictures.
Who tells you how to change the module or customize views, to the other languages list of galleries conclusions are correct?