diff --git a/src/fgt/filter_func/filter_func.cpp b/src/fgt/filter_func/filter_func.cpp
index 26ec12983..524630f46 100644
--- a/src/fgt/filter_func/filter_func.cpp
+++ b/src/fgt/filter_func/filter_func.cpp
@@ -320,7 +320,9 @@ void FilterFunctionPlugin::initParameterSet(QAction *action,MeshModel &m, RichPa
 // The Real Core Function doing the actual mesh processing.
 bool FilterFunctionPlugin::applyFilter(QAction *filter, MeshDocument &md, RichParameterSet & par, vcg::CallBackPos *cb)
 {
-    MeshModel &m=*(md.mm());
+  if(this->getClass(filter) == MeshFilterInterface::MeshCreation)
+       md.addNewMesh("",this->filterName(ID(filter)));
+  MeshModel &m=*(md.mm());
 	Q_UNUSED(cb);
 	switch(ID(filter)) {
 		case FF_VERT_SELECTION :
diff --git a/src/fgt/filter_ssynth/filter_ssynth.cpp b/src/fgt/filter_ssynth/filter_ssynth.cpp
index 2c00d369a..1449f5867 100644
--- a/src/fgt/filter_ssynth/filter_ssynth.cpp
+++ b/src/fgt/filter_ssynth/filter_ssynth.cpp
@@ -71,6 +71,7 @@ void FilterSSynth::openX3D(const QString &fileName, MeshModel &m, int& mask, vcg
 }
 bool FilterSSynth::applyFilter(QAction*  filter, MeshDocument &md, RichParameterSet & par, vcg::CallBackPos *cb)
 {
+    md.addNewMesh("",this->filterName(ID(filter)));
     QWidget *  parent=(QWidget*)this->parent();
     RichParameter* grammar=par.findParameter(QString("grammar"));
     RichParameter* seed=par.findParameter(QString("seed"));
@@ -139,7 +140,7 @@ int FilterSSynth::getRequirements(QAction *)
 }
 int FilterSSynth::postCondition(QAction* filter) const
 {
-        return MeshModel::MM_VERTCOLOR;
+        return MeshModel::MM_UNKNOWN;
 }
  MeshFilterInterface::FilterClass FilterSSynth::getClass(QAction *filter)
 {
diff --git a/src/meshlabplugins/filter_fractal/filter_fractal.cpp b/src/meshlabplugins/filter_fractal/filter_fractal.cpp
index 30549f4d2..1c7f725b9 100644
--- a/src/meshlabplugins/filter_fractal/filter_fractal.cpp
+++ b/src/meshlabplugins/filter_fractal/filter_fractal.cpp
@@ -180,7 +180,9 @@ void FilterFractal::initParameterSetForCratersGeneration(MeshDocument &md, RichP
 
 bool FilterFractal::applyFilter(QAction* filter, MeshDocument &md, RichParameterSet &par, vcg::CallBackPos* cb)
 {
-    switch(ID(filter))
+  if(this->getClass(filter) == MeshFilterInterface::MeshCreation)
+       md.addNewMesh("",this->filterName(ID(filter)));
+  switch(ID(filter))
     {
     case CR_FRACTAL_TERRAIN:
     case FP_FRACTAL_MESH:
diff --git a/src/sampleplugins/filtercreateiso/filtercreateiso.cpp b/src/sampleplugins/filtercreateiso/filtercreateiso.cpp
index ea2368089..e02367a90 100644
--- a/src/sampleplugins/filtercreateiso/filtercreateiso.cpp
+++ b/src/sampleplugins/filtercreateiso/filtercreateiso.cpp
@@ -98,8 +98,9 @@ FilterCreateIso::~FilterCreateIso() {
 
 bool FilterCreateIso::applyFilter(QAction *filter, MeshDocument &md, RichParameterSet & par, vcg::CallBackPos * cb)
 {
-    MeshModel &m=*(md.mm());
-    CMeshO::FaceIterator fi;
+  md.addNewMesh("",this->filterName(ID(filter)));
+  MeshModel &m=*(md.mm());
+  CMeshO::FaceIterator fi;
 	CMeshO::VertexIterator vi;
 	if(filter->text() == filterName(FP_CREATEISO) )
 	{