--- trunk/src/applications/hydrodynamics/Hydro.cpp	2007/07/25 19:35:57	1176
+++ trunk/src/applications/hydrodynamics/Hydro.cpp	2007/08/14 17:40:33	1177
@@ -154,7 +154,6 @@ int main(int argc, char* argv[]){
 
 
   
-  std::ofstream outputDiff(outputFilename.c_str());
   std::map<std::string, SDShape>::iterator si;
   for (si = uniqueStuntDoubles.begin(); si != uniqueStuntDoubles.end(); ++si) {
       HydrodynamicsModel* model;
@@ -180,7 +179,10 @@ int main(int argc, char* argv[]){
         //if beads option is turned on, skip the calculation
         if (!args_info.beads_flag) {
           model->calcHydroProps(shape, viscosity, temperature);
+	  std::ofstream outputDiff;
+	  outputDiff.open(outputFilename.c_str());
           model->writeHydroProps(outputDiff);
+	  outputDiff.close();
         }
         
         delete model;