diff --git a/API_GeomDB.cpp b/API_GeomDB.cpp
index 5ebd6c6..18cc634 100644
--- a/API_GeomDB.cpp
+++ b/API_GeomDB.cpp
@@ -188,3 +188,10 @@ __stdcall EgtSaveObjToFile( int nId, const wchar_t* wsFilePath, int nFlag)
 {
    return ( ExeSaveObjToFile( nId, wstrztoA( wsFilePath), nFlag) ? TRUE : FALSE) ;
 }
+
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtSaveMachGroupToFile( int nMGroupId, const wchar_t* wsFilePath, int nFlag)
+{
+   return ( ExeSaveMachGroupToFile( nMGroupId, wstrztoA( wsFilePath), nFlag) ? TRUE : FALSE) ;
+}
diff --git a/EgtInterface.rc b/EgtInterface.rc
index 699b827..d0c1814 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ