An Undefined Index error is reported in watchdog when any page of site is accessed.

Marking as critical as more than a thousand errors are generated on my site per page load due to this bug.

Fix:

multiple_etal.views.inc

if ($field['field']['handler'] == 'content_handler_field_multiple') {

Change to:

if (isset($field['field']['handler']) && $field['field']['handler'] == 'content_handler_field_multiple') {