diff -ruN kicad.orig/common/confirm.cpp kicad/common/confirm.cpp
--- kicad.orig/common/confirm.cpp	2010-10-19 08:48:07.000000000 +0000
+++ kicad/common/confirm.cpp	2010-12-28 13:58:14.765392001 +0000
@@ -66,6 +66,7 @@
                              * See not above as to why this doesn't work. */
 }
 
+bool g_IsScripted = false;
 
 /* Display an error or warning message.
  * If display time > 0 the dialog disappears after displayTime 0.1 seconds
@@ -75,6 +76,12 @@
 {
     wxMessageDialog* dialog;
 
+    if (g_IsScripted)
+    {
+        wxFprintf( stderr, text + _("\n") );
+        return;
+    }
+
     if( displaytime > 0 )
         dialog = new WinEDA_MessageDialog( parent, text, _( "Warning" ),
                                            wxOK | wxICON_INFORMATION,
@@ -95,6 +102,11 @@
 {
     wxMessageDialog* dialog;
 
+    if (g_IsScripted)
+    {
+        wxPrintf( text + _("\n") );
+        return;
+    }
     dialog = new WinEDA_MessageDialog( parent, text, _( "Info:" ),
                                        wxOK | wxICON_INFORMATION, displaytime );
 
diff -ruN kicad.orig/common/edaappl.cpp kicad/common/edaappl.cpp
--- kicad.orig/common/edaappl.cpp	2010-10-19 08:48:07.000000000 +0000
+++ kicad/common/edaappl.cpp	2010-12-28 13:58:28.045392001 +0000
@@ -272,6 +272,7 @@
     wxString EnvLang;
 
     m_Id = aId;
+if (!g_IsScripted)
     m_Checker = new wxSingleInstanceChecker( aName.Lower() + wxT( "-" ) +
                                             wxGetUserId() );
 
diff -ruN kicad.orig/include/common.h kicad/include/common.h
--- kicad.orig/include/common.h	2010-10-19 08:48:07.000000000 +0000
+++ kicad/include/common.h	2010-12-28 13:58:57.861392001 +0000
@@ -6,6 +6,8 @@
 #ifndef __INCLUDE__COMMON_H__
 #define __INCLUDE__COMMON_H__ 1
 
+extern bool g_IsScripted;
+
 #include "wx/confbase.h"
 #include "wx/fileconf.h"
 
diff -ruN kicad.orig/include/wxPcbStruct.h kicad/include/wxPcbStruct.h
--- kicad.orig/include/wxPcbStruct.h	2010-10-19 08:48:07.000000000 +0000
+++ kicad/include/wxPcbStruct.h	2010-12-24 11:03:20.674781923 +0000
@@ -50,6 +50,7 @@
 class WinEDA_PcbFrame : public WinEDA_BasePcbFrame
 {
     friend class PCB_LAYER_WIDGET;
+    friend bool Pcbnew_Scripted();
 
 protected: