From c68862582c299773c803f0beaed554883e9d0d0e Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Fri, 28 Sep 2012 15:48:32 +0200
Subject: [PATCH] Fix fatal error on empty layers caused by recent large
 refactorings

---
 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 9443b4cd4..ccb9723ff 100644
--- a/lib/Slic3r/Print/Object.pm
+++ b/lib/Slic3r/Print/Object.pm
@@ -158,7 +158,7 @@ sub slice {
     }
     
     # remove empty layers from bottom
-    while (@{$self->layers} && !@{$self->layers->[0]->slices} && !@{$self->layers->[0]->thin_walls}) {
+    while (@{$self->layers} && !@{$self->layers->[0]->slices} && !map @{$_->thin_walls}, @{$self->layers->[0]->regions}) {
         shift @{$self->layers};
         for (my $i = 0; $i <= $#{$self->layers}; $i++) {
             $self->layers->[$i]->id($i);