Upgrading Drupal

Please help

Fatal error: Cannot redeclare class InsertQuery in /home/xxxxx/domains/xxxxxxx.lt/public_html/includes/database/query.inc on line 727

Can't access some administration files

I upgraded from D6 to D7.

The admin toolbar at the top of the page doesn't contain any links, it's just empty.

I searched and searched for a solution before posting this, I really appreciate any help.

You can see a screenshot here: http://dl.dropbox.com/u/502243/admin_toolbar_has_no_links.JPG

Not sure what I have changed but whenever I run the cron manually I receive the below error:

Fatal error: Call to undefined function views_build_view() in /path to folder/includes/common.inc(1731) : eval()'d code on line 6

Can anyone help me resolve this issue? Thanks.

Just updated Drupal to version 7.16 and I got the WSOD. After enabling error messages this was what I got:

Parse error: syntax error, unexpected T_STRING in /opt/www/[website]/htdocs/includes/common.inc on line 3139 

Does anyone know what's wrong here? I did the update and then... WSOD.

I have a few galleries on my site which were broken after the core update to 7.16. Attempting to view a gallery results in the following error message:

Notice: Undefined index: comment_node_media_gallery_form in drupal_retrieve_form() (line 765 of [snip]/form.inc).
Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, 'comment_node_media_gallery_form' was given in drupal_retrieve_form() (line 800 of [snip]/form.inc).

I don't know any php...anything I can do?

Hi Community,

I'm new to Drupal and I'm having no real developer's knowledge, but search/google is my friend ;).
Unfortunately, I can't find a straight forward answer to my issue/question:

Issue: