--- kicad/prjconfig.cpp.orig	2010-05-28 19:08:38.000000000 +0200
+++ kicad/prjconfig.cpp	2010-05-29 12:30:10.000000000 +0200
@@ -86,8 +86,15 @@
         m_ProjectFileName = dlg.GetPath();
 
         if( event.GetId() == ID_NEW_PROJECT )
+        {
+            wxString tmpString = m_ProjectFileName.GetFullName();
+            if ( !tmpString.EndsWith( wxT( ".pro" ) ) )
+            {
+                tmpString += wxT( ".pro" );
+                m_ProjectFileName.SetFullName( tmpString );
+            }
             CreateNewProject( m_ProjectFileName.GetFullPath() );
-
+        }
         SetLastProject( m_ProjectFileName.GetFullPath() );
     }