Upon clicking the send invitations button in the email template view the following error message is provided: "PHP Warning: array_combine(): Both parameters should have an equal number of elements in E:{PATH}\limesurvey\common_functions.php on line 7015
PHP Warning: array_merge(): Argument #1 is not an array in E:{PATH}\limesurvey\common_functions.php on line 7016"

It appears that the invitations did actually get sent as expected.

Here are lines 7013-7017:
[CODE]
if ($onlyAttributes===false)
{
$basic_attrs_and_names=array_combine($basic_attrs,$basic_attrs_names);
return array_merge($basic_attrs_and_names,$extra_attrs_and_names);
}
[/CODE]