diff --git a/src/demod/DemodulatorThread.cpp b/src/demod/DemodulatorThread.cpp
index 4b4db25..8c50aa4 100644
--- a/src/demod/DemodulatorThread.cpp
+++ b/src/demod/DemodulatorThread.cpp
@@ -12,7 +12,7 @@
 #include <pthread.h>
 #endif
 
-DemodulatorThread::DemodulatorThread(DemodulatorInstance *parent) : IOThread(), squelchLevel(-100), signalLevel(-100), squelchEnabled(false), cModem(nullptr), cModemKit(nullptr), iqInputQueue(NULL), audioOutputQueue(NULL), audioVisOutputQueue(NULL), threadQueueControl(NULL), threadQueueNotify(NULL), outputBuffers("DemodulatorThreadBuffers") {
+DemodulatorThread::DemodulatorThread(DemodulatorInstance *parent) : IOThread(), outputBuffers("DemodulatorThreadBuffers"), squelchLevel(-100), signalLevel(-100), squelchEnabled(false), cModem(nullptr), cModemKit(nullptr), iqInputQueue(NULL), audioOutputQueue(NULL), audioVisOutputQueue(NULL), threadQueueControl(NULL), threadQueueNotify(NULL) {
     
     demodInstance = parent;
     muted.store(false);
diff --git a/src/process/FFTDataDistributor.cpp b/src/process/FFTDataDistributor.cpp
index 9cad4f9..1e92d9b 100644
--- a/src/process/FFTDataDistributor.cpp
+++ b/src/process/FFTDataDistributor.cpp
@@ -1,6 +1,6 @@
 #include "FFTDataDistributor.h"
 
-FFTDataDistributor::FFTDataDistributor() : fftSize(DEFAULT_FFT_SIZE), linesPerSecond(DEFAULT_WATERFALL_LPS), lineRateAccum(0.0), outputBuffers("FFTDataDistributorBuffers") {
+FFTDataDistributor::FFTDataDistributor() : outputBuffers("FFTDataDistributorBuffers"), fftSize(DEFAULT_FFT_SIZE), linesPerSecond(DEFAULT_WATERFALL_LPS), lineRateAccum(0.0) {
     bufferedItems = 0;
 }
 
diff --git a/src/process/ScopeVisualProcessor.cpp b/src/process/ScopeVisualProcessor.cpp
index 2674981..c9f250b 100644
--- a/src/process/ScopeVisualProcessor.cpp
+++ b/src/process/ScopeVisualProcessor.cpp
@@ -2,7 +2,7 @@
 #include <cstring>
 #include <string>
 
-ScopeVisualProcessor::ScopeVisualProcessor(): fftInData(NULL), fftwOutput(NULL), fftw_plan(NULL), maxScopeSamples(1024), outputBuffers("ScopeVisualProcessorBuffers") {
+ScopeVisualProcessor::ScopeVisualProcessor(): outputBuffers("ScopeVisualProcessorBuffers"), fftInData(NULL), fftwOutput(NULL), fftw_plan(NULL), maxScopeSamples(1024) {
     scopeEnabled.store(true);
     spectrumEnabled.store(true);
     fft_average_rate = 0.65;
diff --git a/src/process/SpectrumVisualProcessor.cpp b/src/process/SpectrumVisualProcessor.cpp
index 1dba5fe..5493a31 100644
--- a/src/process/SpectrumVisualProcessor.cpp
+++ b/src/process/SpectrumVisualProcessor.cpp
@@ -2,7 +2,7 @@
 #include "CubicSDR.h"
 
 
-SpectrumVisualProcessor::SpectrumVisualProcessor() : lastInputBandwidth(0), lastBandwidth(0), fftwInput(NULL), fftwOutput(NULL), fftInData(NULL), fftLastData(NULL), lastDataSize(0), fftw_plan(NULL), resampler(NULL), resamplerRatio(0), outputBuffers("SpectrumVisualProcessorBuffers") {
+SpectrumVisualProcessor::SpectrumVisualProcessor() : outputBuffers("SpectrumVisualProcessorBuffers"), lastInputBandwidth(0), lastBandwidth(0), fftwInput(NULL), fftwOutput(NULL), fftInData(NULL), fftLastData(NULL), lastDataSize(0), fftw_plan(NULL), resampler(NULL), resamplerRatio(0) {
     
     is_view.store(false);
     fftSize.store(0);
diff --git a/src/util/GLFont.cpp b/src/util/GLFont.cpp
index 75109ae..dca15ae 100644
--- a/src/util/GLFont.cpp
+++ b/src/util/GLFont.cpp
@@ -304,12 +304,16 @@ void GLFont::loadFont(std::string fontFile) {
         unsigned int imgWidth = imageWidth, imgHeight = imageHeight;
         unsigned error = lodepng::decode(image, imgWidth, imgHeight, imageFile);
 
+        if (error) {
+            std::cout << "Error loading PNG image file: '" << imageFile << "'" << std::endl;
+        }
+        
         glGenTextures(1, &texId);
         glEnable(GL_TEXTURE_2D);
         glBindTexture(GL_TEXTURE_2D, texId);
         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-        glTexImage2D(GL_TEXTURE_2D, 0, 4, imageWidth, imageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, &image[0]);
+        glTexImage2D(GL_TEXTURE_2D, 0, 4, imageWidth, imageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, error?nullptr:(&image[0]));
         glDisable(GL_TEXTURE_2D);
 
         std::map<int, GLFontChar *>::iterator char_i;