I can't seem to create any custom fields. I'm on the
/civicrm/admin/custom/group page and I choose the "Add Set of Custom Fields" button. After filling out the form (setting "Used For" = Contribution) and hitting the Save button, I'm taken back to the
/civicrm/admin/custom/group page, but my new Custom Data group isn't visible.
There are no error messages in the browser, nor in Watchdog. What could be going wrong here? I'm logged in as user_id=1.
I'm using CiviCRM 4.6.10 on Drupal 7.41.