Fixed a bug that sometimes was preventing the printing

of a usefull error message

src/core/Action.cpp

@@ -212,7 +212,6 @@ void Action::prepare(){
 
 void Action::error( const std::string & msg ) const {
   log.printf("ERROR in input to action %s with label %s : %s \n \n", name.c_str(), label.c_str(), msg.c_str() );
-  if( !line.empty() ) keywords.print( log );
   plumed_merror("ERROR in input to action " + name + " with label " + label + " : " + msg );
 }