diff --git a/EgtGeomKernel.rc b/EgtGeomKernel.rc
index 2d29c2b..9e30757 100644
Binary files a/EgtGeomKernel.rc and b/EgtGeomKernel.rc differ
diff --git a/SurfFlatRegion.cpp b/SurfFlatRegion.cpp
index c23e01a..b841594 100644
--- a/SurfFlatRegion.cpp
+++ b/SurfFlatRegion.cpp
@@ -56,6 +56,7 @@ SurfFlatRegion::Clear( void)
    for ( auto& pLoop : m_vpLoop)
       delete pLoop ;
    m_vpLoop.clear() ;
+   m_vExtInd.clear() ;
 
    m_nTempProp[0] = 0 ;
    m_nTempProp[1] = 0 ;