Upgrading Drupal

After upgrading from D7.8 to D7.12 I always get an error (Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 256 bytes) in /data/sites/web/artedelsuenobe/subsites/leden.artedelsueno.be/includes/menu.inc on line 3725) when I run update.php ; te number of bytes varies (after t"tried to allocat ... bytes)

I am having trouble in upgrading drupal 6 to drupal 7. we have a CCK image field and I am getting the following error..

Missing field module: 'image'. This field cannot be migrated.
Changed field type: The 'field_thumb_image' field type will be changed from 'filefield' to 'image'.
Missing widget: The 'image' widget is not available for the field_thumb_image field, it will be set to the default widget.
Missing formatter: The 'image' formatter used in 5 view modes for the field_thumb_image field is not available, these displays will be reset to the default formatter.
Missing formatter: The 'hidden' formatter used in 2 view modes for the field_thumb_image field is not available, these displays will be reset to the default formatter.
Missing widget: The 'image' widget is not available for the field_thumb_image field, it will be set to the default widget.
Missing formatter: The 'hidden' formatter used in 3 view modes for the field_thumb_image field is not available, these displays will be reset to the default formatter.
Missing formatter: The 'image' formatter used in 4 view modes for the field_thumb_image field is not available, these displays will be reset to the default formatter.

I just upgraded my D6.26 to D7.14, I did all according the instructions, and now I have got the main menu form old D6.26 as shadow in my new installation and main content is where the Footer is, I am so puzzled what might cause this. I checked all the settings. There is less issue when I use Bartik Theme.
The top Admin bar is empty but the links HOME and Logut are there. Here is the web site

http://kurdistanica.com/

I hope someone has solved similar issue, else I have to go back to my old D6.

Hi - if anyone can help with this it would be much appreciated.

I recently upgraded a site from 7.12 to 7.14 and am now seeing this error message on the admin pages:

Notice: Use of undefined constant DRUPAL_WEIGHT_SELECT_MAX - assumed 'DRUPAL_WEIGHT_SELECT_MAX' in form_process_weight() (line 3890 of /home/sites/pjelements.co.uk/public_html/includes/form.inc).

No idea what this is and there seems to be very little on it from searching on Google, apart from a reference to the system.module file.

What should I do?!

Hi,

I've been trying to upgrade Drupal from 6 to 7. So far I've been following the indications in the UPGRADE.TXT file to the letter, and always getting the same error:

DatabaseSchemaObjectExistsException: Cannot add index <em class="placeholder">system_list</em> to table <em class="placeholder">system</em>: index already exists. in DatabaseSchema_mysql->addIndex() (line 433 of /web/d7-rc1/includes/database/mysql/schema.inc).

(With different fields)

Greetings,

I recently started working on a website, and the upgrade was my first priority. I first upgraded Drupal 6.0 to Drupal 6.26 and then I ambitiously upgraded to Drupal 7.0. The upgrade failed for a few reasons so I did a backup restore of the site. Now, I need to revert back to core Drupal 6.26 modules. Right now, my core modules are all 7.15 still.... and they aren't compatible with Drupal 6.26. I'm hesitant to try again to upgrade to 7.15 because there were so many errors.