diff --git a/lib/Slic3r/Fill/Honeycomb.pm b/lib/Slic3r/Fill/Honeycomb.pm
index aa54cb045..0ae87aca8 100644
--- a/lib/Slic3r/Fill/Honeycomb.pm
+++ b/lib/Slic3r/Fill/Honeycomb.pm
@@ -39,7 +39,7 @@ sub fill_surface {
         
         # adjust actual bounding box to the nearest multiple of our hex pattern
         # and align it so that it matches across layers
-        my $print_bounding_box = $self->print->bounding_box;
+        my $print_bounding_box = [ $self->print->bounding_box ];
         my $bounding_box = [ 0, 0, $print_bounding_box->[X2], $print_bounding_box->[Y2] ];
         {
             my $bb_polygon = Slic3r::Polygon->new([
diff --git a/lib/Slic3r/GUI/Dashboard.pm b/lib/Slic3r/GUI/Dashboard.pm
index a582625b8..6bb3d0116 100644
--- a/lib/Slic3r/GUI/Dashboard.pm
+++ b/lib/Slic3r/GUI/Dashboard.pm
@@ -434,6 +434,7 @@ sub repaint {
     $dc->SetPen(Wx::wxBLACK_PEN);
     @{$parent->{object_previews}} = ();
     for my $obj_idx (0 .. $#{$print->objects}) {
+        next unless $parent->{thumbnails}[$obj_idx];
         for my $copy_idx (0 .. $#{$print->copies->[$obj_idx]}) {
             my $copy = $print->copies->[$obj_idx][$copy_idx];
             push @{$parent->{object_previews}}, [ $obj_idx, $copy_idx, $parent->{thumbnails}[$obj_idx]->clone ];