Index: Slim/Control/Stdio.pm
===================================================================
--- Slim/Control/Stdio.pm	(revision 3289)
+++ Slim/Control/Stdio.pm	(working copy)
@@ -246,8 +246,8 @@
 			my @allclients = Slim::Player::Client::clients();
 			$client = $allclients[0];
 		}
-	
-		my @outputParams = $client->execute(\@params);
+
+		my @outputParams = $client->execute(\@params) if $client;
 		
 		foreach my $param (@outputParams) {
 			$param = Slim::Web::HTTP::escape($param);