diff --git a/Shower/QTilde/SplittingFunctions/PTCutOff.cc b/Shower/QTilde/SplittingFunctions/PTCutOff.cc
--- a/Shower/QTilde/SplittingFunctions/PTCutOff.cc
+++ b/Shower/QTilde/SplittingFunctions/PTCutOff.cc
@@ -1,46 +1,48 @@
 // -*- C++ -*-
 //
 // This is the implementation of the non-inlined, non-templated member
 // functions of the PTCutOff class.
 //
 
 #include "PTCutOff.h"
 #include "ThePEG/Interface/ClassDocumentation.h"
 #include "ThePEG/EventRecord/Particle.h"
 #include "ThePEG/Repository/UseRandom.h"
 #include "ThePEG/Repository/EventGenerator.h"
 #include "ThePEG/Utilities/DescribeClass.h"
 
 
 #include "ThePEG/Persistency/PersistentOStream.h"
 #include "ThePEG/Persistency/PersistentIStream.h"
 
 using namespace Herwig;
 
 IBPtr PTCutOff::clone() const {
   return new_ptr(*this);
 }
 
 IBPtr PTCutOff::fullclone() const {
   return new_ptr(*this);
 }
 
 void PTCutOff::persistentOutput(PersistentOStream & os) const {
 }
 
 void PTCutOff::persistentInput(PersistentIStream & is, int) {
 }
 
-
 // The following static variable is needed for the type
 // description system in ThePEG.
 DescribeClass<PTCutOff,SudakovCutOff>
 describeHerwigPTCutOff("Herwig::PTCutOff", "HwShower.so");
 
 void PTCutOff::Init() {
 
   static ClassDocumentation<PTCutOff> documentation
     ("There is no documentation for the PTCutOff class");
 
 }
 
+void PTCutOff::doinit() {
+  SudakovCutOff::doinit();
+}
diff --git a/Shower/QTilde/SplittingFunctions/PTCutOff.h b/Shower/QTilde/SplittingFunctions/PTCutOff.h
--- a/Shower/QTilde/SplittingFunctions/PTCutOff.h
+++ b/Shower/QTilde/SplittingFunctions/PTCutOff.h
@@ -1,84 +1,96 @@
 // -*- C++ -*-
 #ifndef Herwig_PTCutOff_H
 #define Herwig_PTCutOff_H
 //
 // This is the declaration of the PTCutOff class.
 //
 
 #include "SudakovCutOff.h"
 
 namespace Herwig {
 
 using namespace ThePEG;
 
 /**
  * Here is the documentation of the PTCutOff class.
  *
  * @see \ref PTCutOffInterfaces "The interfaces"
  * defined for PTCutOff.
  */
 class PTCutOff: public SudakovCutOff {
 
 public:
   
   /**
    * The default constructor.
    */
   PTCutOff() {}
 
 public:
 
   /** @name Functions used by the persistent I/O system. */
   //@{
   /**
    * Function used to write out object persistently.
    * @param os the persistent output stream written to.
    */
   void persistentOutput(PersistentOStream & os) const;
 
   /**
    * Function used to read in object persistently.
    * @param is the persistent input stream read from.
    * @param version the version number of the object when written.
    */
   void persistentInput(PersistentIStream & is, int version);
   //@}
 
   /**
    * The standard Init function used to initialize the interfaces.
    * Called exactly once for each class by the class description system
    * before the main function starts or
    * when this class is dynamically loaded.
    */
   static void Init();
 
 protected:
 
+  /** @name Standard Interfaced functions. */
+  //@{
+  /**
+   * Initialize this object after the setup phase before saving an
+   * EventGenerator to disk.
+   * @throws InitException if object could not be initialized properly.
+   */
+  virtual void doinit();
+  //@}
+
+protected:
+
   /** @name Clone Methods. */
   //@{
   /**
    * Make a simple clone of this object.
    * @return a pointer to the new object.
    */
   virtual IBPtr clone() const;
 
   /** Make a clone of this object, possibly modifying the cloned object
    * to make it sane.
    * @return a pointer to the new object.
    */
   virtual IBPtr fullclone() const;
   //@}
 
 private:
 
   /**
    * The assignment operator is private and must never be called.
    * In fact, it should not even be implemented.
    */
   PTCutOff & operator=(const PTCutOff &);
 
 };
 
 }
 
 #endif /* Herwig_PTCutOff_H */