diff --git a/CurveComposite.cpp b/CurveComposite.cpp
index 696ddbc..d8046fc 100644
--- a/CurveComposite.cpp
+++ b/CurveComposite.cpp
@@ -38,6 +38,9 @@
 
 using namespace std ;
 
+//----------------------------------------------------------------------------
+static const double EPS_CONNECT = 0.01 * EPS_SMALL ;
+
 //----------------------------------------------------------------------------
 GEOOBJ_REGISTER( CRV_COMPO, NGE_C_CMP, CurveComposite) ;
 
@@ -215,7 +218,7 @@ CurveComposite::AddSimpleCurve( ICurve* pSmplCrv, bool bEndOrStart, double dLinT
         // verifico sia in continuitā con il finale attuale
          Point3d ptEnd ;
          GetEndPoint( ptEnd) ;
-         if ( ! AreSamePointEpsilon( ptCrvStart, ptEnd, 0.01 * EPS_SMALL)) {
+         if ( ! AreSamePointEpsilon( ptCrvStart, ptEnd, EPS_CONNECT)) {
            // se in tolleranza, modifico l'inizio dell'entitā
             if ( SqDist( ptCrvStart, ptEnd) < ( dLinTol * dLinTol)) {
               // lunghezza della curva originale
@@ -237,7 +240,7 @@ CurveComposite::AddSimpleCurve( ICurve* pSmplCrv, bool bEndOrStart, double dLinT
         // verifico sia in continuitā con l'iniziale attuale
          Point3d ptStart ;
          GetStartPoint( ptStart) ;
-         if ( ! AreSamePointEpsilon( ptCrvEnd, ptStart, 0.01 * EPS_SMALL)) {
+         if ( ! AreSamePointEpsilon( ptCrvEnd, ptStart, EPS_CONNECT)) {
            // se in tolleranza, modifico la fine dell'entitā
             if ( SqDist( ptCrvEnd, ptStart) < ( dLinTol * dLinTol)) {
               // lunghezza della curva originale
@@ -267,7 +270,8 @@ CurveComposite::AddSimpleCurve( ICurve* pSmplCrv, bool bEndOrStart, double dLinT
 
   // imposto ricalcolo Voronoi
    ResetVoronoiObject() ;
-   return Validate() ;
+
+   return TestClosure() ;
 }
 
 //----------------------------------------------------------------------------
@@ -857,20 +861,31 @@ CurveComposite::Validate( void)
    }
 
   // verifico chiusura
-   if ( IsClosed()) {     
-      Point3d ptStart ; m_CrvSmplS.front()->GetStartPoint( ptStart) ;
-      Point3d ptEnd ; m_CrvSmplS.back()->GetEndPoint( ptEnd) ;
-     // se distanza superiore al limite ridotto forzo i punti a coincidere
-      if ( ! AreSamePointEpsilon( ptStart, ptEnd, 0.01 * EPS_SMALL)) {
-         Point3d ptM = Media( ptStart, ptEnd) ;
-         m_CrvSmplS.front()->ModifyStart( ptM) ;
-         m_CrvSmplS.back()->ModifyEnd( ptM) ;
-      }   
-   }
+   TestClosure() ;
 
    return ( m_nStatus == OK) ;
 }
 
+//----------------------------------------------------------------------------
+bool
+CurveComposite::TestClosure( void)
+{
+  // se non č chiusa, esco subito
+   if ( ! IsClosed())
+      return true ;
+  // verifico ed eventualmente aggiusto coincidenza punti estremi
+   Point3d ptStart ; m_CrvSmplS.front()->GetStartPoint( ptStart) ;
+   Point3d ptEnd ; m_CrvSmplS.back()->GetEndPoint( ptEnd) ;
+   // se distanza superiore al limite ridotto forzo i punti a coincidere
+   if ( ! AreSamePointEpsilon( ptStart, ptEnd, EPS_CONNECT)) {
+      Point3d ptM = Media( ptStart, ptEnd) ;
+      if ( ! m_CrvSmplS.front()->ModifyStart( ptM)  ||
+           ! m_CrvSmplS.back()->ModifyEnd( ptM))
+         return false ;
+   }
+   return true ;
+}
+
 //----------------------------------------------------------------------------
 bool
 CurveComposite::IsFlat( Plane3d& plPlane, bool bUseExtrusion, double dToler) const
diff --git a/CurveComposite.h b/CurveComposite.h
index a5b7f95..ee458fc 100644
--- a/CurveComposite.h
+++ b/CurveComposite.h
@@ -199,6 +199,7 @@ class CurveComposite : public ICurveComposite, public IGeoObjRW
    private :
       bool CopyFrom( const CurveComposite& ccSrc) ;
       bool Validate( void) ;
+      bool TestClosure( void) ;
       bool AddCurveByRelocate( CurveComposite& ccSrc, bool bEndOrStart = true, double dLinTol = EPS_SMALL) ;
       bool AddSimpleCurve( ICurve* pSmplCrv, bool bEndOrStart = true, double dLinTol = EPS_SMALL) ;
       bool GetIndSCurveAndLocPar( double dU, Side nS, int& nSCrv, double& dLocU) const ;
diff --git a/GdbIterator.cpp b/GdbIterator.cpp
index f5f7d26..21dfb1a 100644
--- a/GdbIterator.cpp
+++ b/GdbIterator.cpp
@@ -1468,7 +1468,8 @@ GdbIterator::SetInfo( const string& sKey, int nInfo)
 bool
 GdbIterator::SetInfo( const string& sKey, double dInfo)
 {
-   return SetInfo( sKey, ToString( dInfo)) ;
+   int nErr ;
+   return ( SetInfo( sKey, ToString( dInfo, 6, &nErr)) && nErr == 0) ;
 }
 
 //----------------------------------------------------------------------------
diff --git a/GdbObj.cpp b/GdbObj.cpp
index 0bdda80..bf8f258 100644
--- a/GdbObj.cpp
+++ b/GdbObj.cpp
@@ -862,7 +862,8 @@ GdbObj::SetInfo( const string& sKey, int nInfo)
 bool
 GdbObj::SetInfo( const string& sKey, double dInfo)
 {
-   return SetInfo( sKey, ToString( dInfo)) ;
+   int nErr ; 
+   return ( SetInfo( sKey, ToString( dInfo, 6, &nErr)) && nErr == 0) ;
 }
 
 //----------------------------------------------------------------------------
diff --git a/GeomDB.cpp b/GeomDB.cpp
index 80a13bc..e8a6374 100644
--- a/GeomDB.cpp
+++ b/GeomDB.cpp
@@ -2785,7 +2785,8 @@ GeomDB::SetInfo( int nId, const string& sKey, int nInfo)
 bool
 GeomDB::SetInfo( int nId, const string& sKey, double dInfo)
 {
-   return SetInfo( nId, sKey, ToString( dInfo)) ;
+   int nErr ;
+   return ( SetInfo( nId, sKey, ToString( dInfo, 6, &nErr)) && nErr == 0) ;
 }
 
 //----------------------------------------------------------------------------