Upgrading Drupal

Hi,

I just upgraded from Drupal 5.7 to 5.21 and now I cannot add or edit any menu items. I get a "page not found" error.

Please please help!

Thank you,

_{Edited by WorldFallz - moved to appropriate forum.}

I just upgraded to Image Gallery 6.x-1.0-beta4 and since my galleries no longer show a title. I probably need to change something in a view but I have no clue what. I have fiddled around forever but without results. I also searched here but didn't really get anywhere.

Can anybody give me some pointers?

Link to my galleries for reference: http://www.lostsummit.net/?q=image

I really dont have much knowledge when it comes to coding but I have what seems to be a upgrading issue and I am not sure if it is a bug or if its my site. I know Drupal 7 is not out yet but I am trying to upgrade my site at a fake location to see how its going. The site is exactly as my site would be when I will attempt to upgrade it to Drupal 7.

I have recently upgraded my drupal site from 6.14 to 6.15 and when I put all my custom modules back in and upgraded those as well my videos, where I had Youtube videos posts on the page, no longer work. If I am on the admin side and go to the page and try to edit it I get this error:

Fatal error: Call to undefined function video_get_type_info() in /home/content/t/o/n/tonyvalle/html/designbystrand/modules/video/plugins/video_image/video_image.module on line 132

In the upgrade.txt that comes with drupal installations it says to:

6. Remove all old files and directories from the Drupal installation directory.

7. Unpack the new files and directories into the Drupal installation directory.

8. Copy your backed up "files" and "sites" directories to the Drupal
installation directory. If other system files such as .htaccess or
robots.txt were customized, re-create the modifications in the new
versions of the files using the backups taken in step #1.

A client has requested me to upgrade a Drupal 5 installation to Drupal 6, but it happens to be another Drupal 5 site in the same domain. From what I checked, there is no multi-site configuration, no single sign-on feature, each site is independent. Will session cookies work correctly if I upgrade just one of the sites to Drupal 6, or I should upgrade both? Or would it be safer to move the upgraded site to its own domain and forget about these troubles?

Thank you in advance!
Andres