diff --git a/lib/Slic3r.pm b/lib/Slic3r.pm
index 80532784c..57e92f134 100644
--- a/lib/Slic3r.pm
+++ b/lib/Slic3r.pm
@@ -21,6 +21,9 @@ BEGIN {
     $have_threads = $Config{useithreads} && eval "use threads; use Thread::Queue; 1";
 }
 
+use FindBin;
+our $var = "$FindBin::Bin/var";
+
 use Moo;
 use Slic3r::Config;
 use Slic3r::ExPolygon;
@@ -43,6 +46,7 @@ use Slic3r::Print;
 use Slic3r::Print::Object;
 use Slic3r::Surface;
 use Slic3r::TriangleMesh;
+eval "use Slic3r::Build";
 
 our $threads            = $have_threads ? 2 : 1;
 
diff --git a/lib/Slic3r/GUI.pm b/lib/Slic3r/GUI.pm
index 00f2c30d2..600708bfb 100644
--- a/lib/Slic3r/GUI.pm
+++ b/lib/Slic3r/GUI.pm
@@ -21,7 +21,7 @@ sub OnInit {
     my $frame = Wx::Frame->new( undef, -1, 'Slic3r', [-1, -1], Wx::wxDefaultSize,
          wxDEFAULT_FRAME_STYLE ^ (wxRESIZE_BORDER | wxMAXIMIZE_BOX) );
     Wx::Image::AddHandler(Wx::PNGHandler->new);
-    $frame->SetIcon(Wx::Icon->new("$FindBin::Bin/var/Slic3r_128px.png", &Wx::wxBITMAP_TYPE_PNG) );
+    $frame->SetIcon(Wx::Icon->new("$Slic3r::var/Slic3r_128px.png", &Wx::wxBITMAP_TYPE_PNG) );
     
     my $panel = Slic3r::GUI::SkeinPanel->new($frame);
     my $box = Wx::BoxSizer->new(wxVERTICAL);
diff --git a/lib/Slic3r/GUI/Plater.pm b/lib/Slic3r/GUI/Plater.pm
index db4467bed..87c736e30 100644
--- a/lib/Slic3r/GUI/Plater.pm
+++ b/lib/Slic3r/GUI/Plater.pm
@@ -57,16 +57,16 @@ sub new {
     if (!&Wx::wxMSW) {
         Wx::ToolTip::Enable(1);
         $self->{htoolbar} = Wx::ToolBar->new($self, -1, [-1, -1], [-1, -1], &Wx::wxTB_HORIZONTAL | &Wx::wxTB_HORZ_TEXT);
-        $self->{htoolbar}->AddTool(TB_MORE, "More", Wx::Bitmap->new("$FindBin::Bin/var/add.png", &Wx::wxBITMAP_TYPE_PNG), '');
-        $self->{htoolbar}->AddTool(TB_LESS, "Less", Wx::Bitmap->new("$FindBin::Bin/var/delete.png", &Wx::wxBITMAP_TYPE_PNG), '');
+        $self->{htoolbar}->AddTool(TB_MORE, "More", Wx::Bitmap->new("$Slic3r::var/add.png", &Wx::wxBITMAP_TYPE_PNG), '');
+        $self->{htoolbar}->AddTool(TB_LESS, "Less", Wx::Bitmap->new("$Slic3r::var/delete.png", &Wx::wxBITMAP_TYPE_PNG), '');
         $self->{htoolbar}->AddSeparator;
-        $self->{htoolbar}->AddTool(TB_45CCW, "45° ccw", Wx::Bitmap->new("$FindBin::Bin/var/arrow_rotate_anticlockwise.png", &Wx::wxBITMAP_TYPE_PNG), '');
-        $self->{htoolbar}->AddTool(TB_45CW, "45° cw", Wx::Bitmap->new("$FindBin::Bin/var/arrow_rotate_clockwise.png", &Wx::wxBITMAP_TYPE_PNG), '');
-        $self->{htoolbar}->AddTool(TB_ROTATE, "Rotate...", Wx::Bitmap->new("$FindBin::Bin/var/arrow_rotate_clockwise.png", &Wx::wxBITMAP_TYPE_PNG), '');
+        $self->{htoolbar}->AddTool(TB_45CCW, "45° ccw", Wx::Bitmap->new("$Slic3r::var/arrow_rotate_anticlockwise.png", &Wx::wxBITMAP_TYPE_PNG), '');
+        $self->{htoolbar}->AddTool(TB_45CW, "45° cw", Wx::Bitmap->new("$Slic3r::var/arrow_rotate_clockwise.png", &Wx::wxBITMAP_TYPE_PNG), '');
+        $self->{htoolbar}->AddTool(TB_ROTATE, "Rotate...", Wx::Bitmap->new("$Slic3r::var/arrow_rotate_clockwise.png", &Wx::wxBITMAP_TYPE_PNG), '');
         $self->{htoolbar}->AddSeparator;
-        $self->{htoolbar}->AddTool(TB_SCALE, "Scale...", Wx::Bitmap->new("$FindBin::Bin/var/arrow_out.png", &Wx::wxBITMAP_TYPE_PNG), '');
+        $self->{htoolbar}->AddTool(TB_SCALE, "Scale...", Wx::Bitmap->new("$Slic3r::var/arrow_out.png", &Wx::wxBITMAP_TYPE_PNG), '');
         $self->{htoolbar}->AddSeparator;
-        $self->{htoolbar}->AddTool(TB_SPLIT, "Split", Wx::Bitmap->new("$FindBin::Bin/var/shape_ungroup.png", &Wx::wxBITMAP_TYPE_PNG), '');
+        $self->{htoolbar}->AddTool(TB_SPLIT, "Split", Wx::Bitmap->new("$Slic3r::var/shape_ungroup.png", &Wx::wxBITMAP_TYPE_PNG), '');
     } else {
         my %tbar_buttons = (increase => "More", decrease => "Less", rotate45ccw => "45°", rotate45cw => "45°",
             rotate => "Rotate…", changescale => "Scale…", split => "Split");
@@ -104,7 +104,7 @@ sub new {
             split           shape_ungroup.png
         );
         for (grep $self->{"btn_$_"}, keys %icons) {
-            $self->{"btn_$_"}->SetBitmap(Wx::Bitmap->new("$FindBin::Bin/var/$icons{$_}", &Wx::wxBITMAP_TYPE_PNG));
+            $self->{"btn_$_"}->SetBitmap(Wx::Bitmap->new("$Slic3r::var/$icons{$_}", &Wx::wxBITMAP_TYPE_PNG));
         }
     }
     $self->selection_changed(0);
diff --git a/lib/Slic3r/GUI/SkeinPanel.pm b/lib/Slic3r/GUI/SkeinPanel.pm
index 8c5ff1d35..f695acca7 100644
--- a/lib/Slic3r/GUI/SkeinPanel.pm
+++ b/lib/Slic3r/GUI/SkeinPanel.pm
@@ -90,7 +90,7 @@ sub new {
     if (eval "use Growl::GNTP; 1") {
         # register growl notifications
         eval {
-            $self->{growler} = Growl::GNTP->new(AppName => 'Slic3r', AppIcon => "$FindBin::Bin/var/Slic3r.png");
+            $self->{growler} = Growl::GNTP->new(AppName => 'Slic3r', AppIcon => "$Slic3r::var/Slic3r.png");
             $self->{growler}->register([{Name => 'SKEIN_DONE', DisplayName => 'Slicing Done'}]);
         };
     }