--- a/QTfrontend/HWApplication.cpp	Fri Oct 11 11:55:31 2013 +0200
+++ b/QTfrontend/HWApplication.cpp	Fri Oct 11 17:43:13 2013 +0200
@@ -38,6 +38,8 @@
 HWApplication::HWApplication(int &argc, char **argv) :
     QApplication(argc, argv)
 {
+    form = 0;
+
 #if !defined(Q_OS_WIN)
     signal(SIGINT, &terminateFrontend);
 #endif