diff --git a/camconfig.cpp b/camconfig.cpp
index a0cda0e..9c05298 100644
--- a/camconfig.cpp
+++ b/camconfig.cpp
@@ -5,6 +5,7 @@
 
 CamConfigurator::CamConfigurator(Pylon::DeviceInfoList &deviceList, QWidget *parent) :
     deviceList(deviceList), QDialog(parent), preview(nullptr) {
+    qDebug() << "CamConfig constructor";
     mode_combo = new QComboBox(this);
     mode_combo->addItem("camera mode");
     mode_combo->addItem("single camera");
@@ -45,6 +46,7 @@ CamConfigurator::CamConfigurator(Pylon::DeviceInfoList &deviceList, QWidget *par
     connect(buttonbox, &QDialogButtonBox::accepted, this, &QDialog::accept);
     connect(buttonbox, &QDialogButtonBox::rejected, this, &QDialog::reject);
     vbox->addWidget(buttonbox);
+    qDebug() << "CamConfig constructor done!";
 }
 
 
@@ -71,6 +73,7 @@ CameraSetup* CamConfigurator::stereoCameraView() {
 
 
 void CamConfigurator::modeChanged(int idx) {
+    qDebug() << "Mode changed!";
     stack->setCurrentIndex(0);
     if (stack->count() > 1 && preview != nullptr) {
         qDebug() << "removing previous widget from stack";
@@ -115,10 +118,11 @@ void CamConfigurator::modeChanged(int idx) {
 
 
 void CamConfigurator::primaryDeviceChanged(int idx) {
+    qDebug() << "Primary device changed!";
     if (mode_combo->currentText() == "single camera") { // single camera setting
         QString devicename = device_combo->currentText();
         preview->setPrimaryCamera(devicename);
-    } else {
+    } else if (mode_combo->currentText() == "stereo camera") { // stereo camera setting
         preview->switchArrangement();
     }
 }