diff --git a/numptyphysics/Game.h b/numptyphysics/Game.h

index 2caa0f9..04c30d4 100644

--- a/numptyphysics/Game.h

+++ b/numptyphysics/Game.h

@@ -58,7 +58,7 @@ struct GameControl

   virtual ~GameControl() {}

   virtual bool save( const char *file=NULL ) =0;

   virtual bool send() =0;

-  virtual bool load( const char* file ) {};

+  virtual bool load( const char* file ) { return true; };

   virtual void gotoLevel( int l, bool replay=false ) =0;

   virtual void clickMode(int cm) =0;

   Levels& levels() { return *m_levels; }

diff --git a/numptyphysics/Http.cpp b/numptyphysics/Http.cpp

index f5d259e..3ab8405 100644

--- a/numptyphysics/Http.cpp

+++ b/numptyphysics/Http.cpp

@@ -175,6 +175,7 @@ bool Http::post( const char* uri, const char*putname, const char* putfile,

       fprintf(stderr,"http_get wobbly: %s\n",w.what());

     }

   }

+  return true;

 }

diff --git a/numptyphysics/Levels.cpp b/numptyphysics/Levels.cpp

index 6b83738..5c38e28 100644

--- a/numptyphysics/Levels.cpp

+++ b/numptyphysics/Levels.cpp

@@ -115,6 +115,7 @@ bool Levels::addPath( const char* path )

 bool Levels::addLevel( const string& file, int rank, int index )

 {

   addLevel( getCollection(MISC_COLLECTION), file, rank, index );

+  return true;

 }

 bool Levels::addLevel( Collection* collection,

@@ -248,6 +249,7 @@ int Levels::collectionFromLevel( int i, int *indexInCol )

       }

     }

   }

+  return 0;

 }

 std::string Levels::collectionName( int i, bool pretty )

diff --git a/numptyphysics/Scene.cpp b/numptyphysics/Scene.cpp

index befcefc..118c0e0 100644

--- a/numptyphysics/Scene.cpp

+++ b/numptyphysics/Scene.cpp

@@ -616,6 +616,7 @@ bool Scene::activateStroke( Stroke *s )

 {

   activate(s);

   m_recorder.activateStroke( m_strokes.indexOf(s) );

+  return true;

 }

 void Scene::getJointCandidates( Stroke* s, Path& pts )

diff --git a/numptyphysics/Ui.cpp b/numptyphysics/Ui.cpp

index d20ea39..bd4d13b 100644

--- a/numptyphysics/Ui.cpp

+++ b/numptyphysics/Ui.cpp

@@ -1087,6 +1087,7 @@ bool Dialog::close()

     //fprintf(stderr,"close dialog\n");    

     m_closeRequested = true;

   }

+  return true;

 }

diff --git a/numptyphysics/Worker.cpp b/numptyphysics/Worker.cpp

index c35d893..f201095 100644

--- a/numptyphysics/Worker.cpp

+++ b/numptyphysics/Worker.cpp

@@ -64,4 +64,5 @@ int WorkerBase::startThread(void* wbase)

   event.user.data1 = wbase;

   event.user.data2 = 0;

   SDL_PushEvent(&event);

+  return 0;

 }