From a25757a66d3a757eb965863295db30ec7c25e163 Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Wed, 4 Nov 2015 19:19:45 +0100
Subject: [PATCH] Fixed regression causing empty prints to hang. #3107

---
 lib/Slic3r/Print/Object.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Slic3r/Print/Object.pm b/lib/Slic3r/Print/Object.pm
index 765fb386f4..6012c8cd43 100644
--- a/lib/Slic3r/Print/Object.pm
+++ b/lib/Slic3r/Print/Object.pm
@@ -308,7 +308,7 @@ sub slice {
     
     # remove empty layers from bottom
     while (@{$self->layers} && !@{$self->get_layer(0)->slices}) {
-        shift @{$self->layers};
+        $self->delete_layer(0);
         for (my $i = 0; $i <= $#{$self->layers}; $i++) {
             $self->get_layer($i)->set_id( $self->get_layer($i)->id-1 );
         }