Notices thrown -- "Undefined index: taxonomy_term"

notice thrown in ctools_entity_field_value_ctools_access_check() (line 165 of plugins/access/entity_field_value.inc)

full text displayed when displaying panel page:

    Notice: Undefined index: taxonomy_term in ctools_entity_field_value_ctools_access_check() (line 165 of <...>/ctools/plugins/access/entity_field_value.inc).
    Notice: Undefined index: taxonomy_term in ctools_entity_field_value_ctools_access_check() (line 165 of <...>/ctools/plugins/access/entity_field_value.inc).
    Notice: Undefined index: taxonomy_term in ctools_entity_field_value_ctools_access_check() (line 165 of <...>/ctools/plugins/access/entity_field_value.inc).
    Notice: Undefined index: taxonomy_term in ctools_entity_field_value_ctools_access_check() (line 165 of <...>/ctools/plugins/access/entity_field_value.inc).

This panel is an override of the 'user_view' page. I'm using three selectors -- all three (OR'd) are if a taxonomy field on the user is equal to a particular value. (The user view panel should be viewed if the user is any of the three identified types.)

See also this (fixed) defect:
http://drupal.org/node/1520036