[Bastien]

//affichage widget dans forum
// CHATBOX
// SIDE BOX POUR CHATBOX
	global $show;
	global $output;
	
	// Core
	require_once(DIR . '/mgc_cb_evo/classes/class_core.php');     
    $MGCCbEvoCore = new MGCCbEvo_core(vB::$vbulletin,vB::$vbulletin->userinfo['permissions']); 
    $MGCCbEvoCore->unserialize_user_params(); 
    
    if ($MGCCbEvoCore->show_chatbox() && $MGCCbEvoCore->evo_permissions->can_view())
    {
		$show['mgc_cb_evo'] = 1;
		
		// Construct chatbox display 
		require_once(DIR . '/mgc_cb_evo/classes/class_display.php'); 
		require_once(DIR . '/mgc_cb_evo/addons/cms/classes/class_display.php'); 
		$MGCCbEvoDisplay = new CMS_MGCCbEvo_display(vB::$vbulletin,$MGCCbEvoCore); 

		// Display construction 
		$output = $MGCCbEvoDisplay->construct_display();  
//echo "output_fichier : $output";	
	}
	else
	{
		$show['mgc_cb_evo'] = 0;	
	
	}

The commented line //echo "output_fichier : $output"; if uncommented, displays the chatbox at the top of the page in my SC

whereas in my template, this

output template {vb:raw output} $output

Only displays : output template $output