Index: /trunk/FACT++/gui/MainWindow.cc
===================================================================
--- /trunk/FACT++/gui/MainWindow.cc	(revision 11789)
+++ /trunk/FACT++/gui/MainWindow.cc	(revision 11790)
@@ -534,20 +534,24 @@
 void MainWindow::on_fLpIntGroup1_stateChanged(int b)
 {
-    Dim::SendCommand("FTM_CONTROL/ENABLE_GROUP1_LPINT", uint8_t(b));
+    if (!fInHandler)
+        Dim::SendCommand("FTM_CONTROL/ENABLE_GROUP1_LPINT", uint8_t(b));
 }
 
 void MainWindow::on_fLpExtGroup1_stateChanged(int b)
 {
-    Dim::SendCommand("FTM_CONTROL/ENABLE_GROUP1_LPEXT", uint8_t(b));
+    if (!fInHandler)
+        Dim::SendCommand("FTM_CONTROL/ENABLE_GROUP1_LPEXT", uint8_t(b));
 }
 
 void MainWindow::on_fLpIntGroup2_stateChanged(int b)
 {
-    Dim::SendCommand("FTM_CONTROL/ENABLE_GROUP2_LPINT", uint8_t(b));
+    if (!fInHandler)
+        Dim::SendCommand("FTM_CONTROL/ENABLE_GROUP2_LPINT", uint8_t(b));
 }
 
 void MainWindow::on_fLpExtGroup2_stateChanged(int b)
 {
-    Dim::SendCommand("FTM_CONTROL/ENABLE_GROUP2_LPEXT", uint8_t(b));
+    if (!fInHandler)
+        Dim::SendCommand("FTM_CONTROL/ENABLE_GROUP2_LPEXT", uint8_t(b));
 }