looks like from 4.1 it is mandatory to have 'functions' element in view definition if module has any defined functions.
Example:
This module will not work untill you define functions element for the view.

$Module = array( 'name' => 'Multievent' );
$ViewList = array();
$ViewList['newcalendarevents'] = array( 'script' => 'newcalendarevents.php',
                                                          'functions' => array( 'newcalendarevents' ),
                                                          'params' => array() );
$FunctionList = array();
$FunctionList['newcalendarevents'] = array();

This was not like this in previous versions of ezpublish, and behavour was that you had to have module/* policy in your role to have access to such view, but now admin with //* does not have access to such views.