If this error occurs if you want to view or edit an order, it could be possible that you have a conflict with the menu_breadcrumb module. It discussed here: http://drupal.org/node/587572 #14.
Solution work around: Disable the menu_breadcrumb module and all works fine.
Comments
Comment #1
DrupalYedi commentedI've posted the bug here: http://drupal.org/node/597994
There is also an conflict between Ubercart RC7 and menu_breadcrumb if yout get this issue: Fatal error: Call to undefined function uc_price() in ...www/sites/all/modules/ubercart/uc_order/uc_order.module on line 1438
Comment #2
jurgenhaasHi DrupalYedi, you are experiencing this error with the 1.0 release. Please try the latest dev version and let me know if it happens there as well. I guess it should be OK but I want to be sure it is OK before making it a proper release.
Comment #3
DrupalYedi commentedI've tried the 1.x dev Version and it resolve this issue. Works fine! But If you have menu_breadcrumb aktivated you'll get the uc_price issue described above.
Thanks!
Comment #4
jurgenhaasGreat, thanks for reporting back.