--- therion/thdb1d.cxx	Mon Dec 23 10:28:50 2013
+++ therion/thdb1d.cxx	Sat Jun  7 17:05:31 2014
@@ -786,10 +786,6 @@
   size_t tn_legs = this->leg_vec.size();
   size_t tn_stations = this->station_vec.size();
   
-  
-  if ((tn_legs < 0) || (tn_stations < 0))
-    return;
-  
 #ifdef THDEBUG
     thprintf("\n\nscanning centreline tree\n");
 #else
@@ -2951,8 +2947,6 @@
 {
   unsigned long tn_legs = this->leg_vec.size();
   unsigned long tn_stations = this->station_vec.size();
-  if ((tn_legs < 0) || (tn_stations < 0))
-    return;
 
 #ifdef THDEBUG
     thprintf("\n\nprocessing extended elevation\n");