diff --git a/src/AppFrame.cpp b/src/AppFrame.cpp
index c55e61c..7aa8d0d 100644
--- a/src/AppFrame.cpp
+++ b/src/AppFrame.cpp
@@ -306,7 +306,6 @@ AppFrame::AppFrame() :
 }
 
 AppFrame::~AppFrame() {
-
 }
 
 void AppFrame::OnMenu(wxCommandEvent& event) {
@@ -688,3 +687,8 @@ bool AppFrame::loadSession(std::string fileName) {
 
     return true;
 }
+
+void AppFrame::OnMessage(std::string text, std::string title) {
+    wxMessageDialog *message = new wxMessageDialog(NULL, wxString::Format(text.c_str()), wxString::Format(title.c_str()), wxOK | wxICON_ERROR );
+    message->ShowModal();
+}
diff --git a/src/AppFrame.h b/src/AppFrame.h
index d5bb09a..b60f5c9 100644
--- a/src/AppFrame.h
+++ b/src/AppFrame.h
@@ -51,12 +51,15 @@ public:
     void saveSession(std::string fileName);
     bool loadSession(std::string fileName);
 
+    void OnMessage(std::string message, std::string title);
+
 private:
     void OnMenu(wxCommandEvent& event);
     void OnClose(wxCommandEvent& event);
     void OnNewWindow(wxCommandEvent& event);
     void OnIdle(wxIdleEvent& event);
 
+
     ScopeCanvas *scopeCanvas;
     SpectrumCanvas *spectrumCanvas;
     WaterfallCanvas *waterfallCanvas;
diff --git a/src/CubicSDR.cpp b/src/CubicSDR.cpp
index fce7a96..cc208ff 100644
--- a/src/CubicSDR.cpp
+++ b/src/CubicSDR.cpp
@@ -87,13 +87,19 @@ bool CubicSDR::OnInit() {
 
         std::cout << "Chosen: " << devId << std::endl;
         sdrThread->setDeviceId(devId);
-    }
+    } 
 
     t_PostSDR = new std::thread(&SDRPostThread::threadMain, sdrPostThread);
     t_SDR = new std::thread(&SDRThread::threadMain, sdrThread);
 
     appframe = new AppFrame();
 
+    if(devs.size() == 0) {
+        // appframe->OnMessage("no devices found!", "warning");
+        wxMessageDialog *message = new wxMessageDialog(NULL, wxT("no devices found"), wxT("warning"), wxOK | wxICON_ERROR );
+        message->ShowModal();
+    }
+
 #ifdef __APPLE__
     int main_policy;
     struct sched_param main_param;