While upgrading to Drupal 7.39 from 6.37, after copying the new files over into the site's directory, when I tried to navigate to the website I see a blank page with the following error: Fatal error: Cannot redeclare template_preprocess_block() (previously declared in /home2/mccotter/public_html/test/includes/theme.inc:2042) in /home2/mccotter/public_html/test/modules/block/block.module on line 1038

I have not yet run update.php, and when I try to the page appears blank. I was unable to sign in as the maintenance user, but I set $update_free_access = TRUE.

For reference, the site that I am attempting to upgrade is jailtraining.org/test

  • try cache clear or registry rebuild option. I hope you have backup of the site and disabled all the contributed modules that should be your first step :) first upgrade the core and after that upgrade other modules.
    – shrish
    Sep 12, 2015 at 3:53
  • Yeah, everything's backed up and I've disabled all the contributed modules. I'm pretty new to Drupal, though, so could you point me somewhere that explains how to use the cache clear or registry rebuild options?
    – Jozomby
    Sep 13, 2015 at 4:58
  • clearing the cache didn't help, I still have yet to try the registry rebuild option, though
    – Jozomby
    Sep 15, 2015 at 18:36

1 Answer 1


Pre-First back up your site.

First upgrade to the most recent version of Drupal 6. The follow instructions here to move to Drupal 7:


Have trouble? Explain where you are in the process at that point so one might help.

  • Thank you for the suggestions! I have been following the upgrade instructions outlined in Upgrade.txt included with the Drupal 7 download, and the latest version of Drupal 6 is 6.37. I'm sorry if wasn't clear enough with where I am in the upgrade process, but I'm at the point where you would normally run update.php.
    – Jozomby
    Sep 13, 2015 at 4:56

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.