( ! ) Fatal error: Only variables can be passed by reference in C:\wamp\www\helpdesk\include\class.plugin.php on line 555
Call Stack
#	Time	Memory	Function	Location
1	0.0005	384312	{main}( )	..\index.php:0
2	0.0009	416136	require( 'C:\wamp\www\helpdesk\client.inc.php' )	..\index.php:16
3	0.0013	435360	require_once( 'C:\wamp\www\helpdesk\main.inc.php' )	..\client.inc.php:21
4	0.0024	608904	require( 'C:\wamp\www\helpdesk\bootstrap.php' )	..\main.inc.php:23
5	0.0038	806584	require( 'C:\wamp\www\helpdesk\include\class.osticket.php' )	..\bootstrap.php:331