diff -Nur clawsker-0.7.14-orig/clawsker clawsker-0.7.14/clawsker
--- clawsker-0.7.14-orig/clawsker	2016-08-16 17:27:47.000000000 +0200
+++ clawsker-0.7.14/clawsker	2016-08-18 18:34:58.562582913 +0200
@@ -467,7 +467,9 @@
     my $pagei = int (($type[2] - $type[1]) / 10);
     my $gentry = Gtk2::SpinButton->new_with_range ($type[1], $type[2], $pagei);
     $gentry->set_numeric (TRUE);
-    $gentry->set_value ($HPVALUE{$name});
+    if (defined($HPVALUE{$name})) {
+        $gentry->set_value ($HPVALUE{$name});
+    }
     $$hash{$key}[GUI] = $gentry;
     $gentry->signal_connect('value-changed' => sub {
             my ($w, $e) = @_;