CiviCRM Community Forums (archive)

Running an upgrade on a copy of our production database encounters the following errors.  The upgrade from 4.3.4 to 4.4b3 stops at this error:

[Error: Finish Upgrade DB to 4.3.5]
Error 1: Class name must be a valid object or a string in /var/www/web/sites/all/modules/civicrm/CRM/Core/PseudoConstant.php, line 278

I thought it was odd that it would fail on 4.3.5.  I started with a clean copy again and ran an upgrade to 4.3.6, and there were no errors.  I backed that up, then ran the upgrade to 4.4b3 and got this again:

[Error: Finish Upgrade DB to 4.4.alpha1]
Error 1: Class name must be a valid object or a string in /var/www/web/sites/all/modules/civicrm/CRM/Core/PseudoConstant.php, line 278

After hitting these errors, the site has a WSOD.

I'm having trouble capturing a backtrace in this instance.  I followed the instructions in the wiki, debugging is turned on etc. but the backtrace is not displayed.  The only thing in the log is the error itself:

Oct 01 20:07:47  [info] $CRM_Queue_ErrorPolicy_reportError = Array
(
    [is_error] => 1
    [is_continue] => 0
    [exception] => Error 1: Class name must be a valid object or a string in /var/www/web/sites/all/modules/civicrm/CRM/Core/PseudoConstant.php, line 278
    [last_task_title] => Finish Upgrade DB to 4.4.alpha1
)

I also tried turning on the option to record errors in the drupal log, but there's nothing there.
Not sure where to go from here.