diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6724fd3..18d13fd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -95,7 +95,7 @@ set(BR_THIRDPARTY_LIBS ${BR_THIRDPARTY_LIBS} ${QT_LIBRARIES})
 # Find OpenCV
 find_package(OpenCV REQUIRED)
 set(BR_THIRDPARTY_LIBS ${BR_THIRDPARTY_LIBS} ${OpenCV_LIBS})
-set(OPENCV_DEPENDENCIES calib3d contrib core features2d flann gpu highgui imgproc legacy ml nonfree objdetect photo stitching ts video videostab)
+set(OPENCV_DEPENDENCIES calib3d contrib core features2d flann gpu highgui imgproc legacy ml nonfree objdetect photo stitching video videostab)
 
 # Enable Testing
 include(CppcheckTargets)
diff --git a/app/openbr-gui/imageviewer.cpp b/app/openbr-gui/imageviewer.cpp
index 834b1a0..a0dbe54 100644
--- a/app/openbr-gui/imageviewer.cpp
+++ b/app/openbr-gui/imageviewer.cpp
@@ -15,6 +15,7 @@
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 #include <QFileDialog>
+#include <QMutexLocker>
 #include <QSizePolicy>
 #include <QTimer>
 
@@ -28,22 +29,20 @@ br::ImageViewer::ImageViewer(QWidget *parent)
     setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
 }
 
-void br::ImageViewer::setDefaultText(const QString &text, bool async)
+void br::ImageViewer::setDefaultText(const QString &text)
 {
     defaultText = text;
-    updatePixmap(async);
 }
 
 void br::ImageViewer::setImage(const QString &file, bool async)
 {
     src = QImage(file);
     updatePixmap(async);
-
 }
 
 void br::ImageViewer::setImage(const QImage &image, bool async)
 {
-    src = image;
+	src = image.copy();
     updatePixmap(async);
 }
 
@@ -61,10 +60,12 @@ void br::ImageViewer::updatePixmap(bool async)
         return;
     }
 
-    if (src.isNull()) {
+	QMutexLocker locker(&mutex);
+    if (src.isNull() || size().isNull()) {
         QLabel::setPixmap(QPixmap());
-        setText(defaultText);
+        QLabel::setText(defaultText);
     } else {
+		QLabel::clear();
         QLabel::setPixmap(QPixmap::fromImage(src.scaled(size(), Qt::KeepAspectRatio)));
     }
 }
diff --git a/app/openbr-gui/imageviewer.h b/app/openbr-gui/imageviewer.h
index f0a117b..43328bf 100644
--- a/app/openbr-gui/imageviewer.h
+++ b/app/openbr-gui/imageviewer.h
@@ -21,6 +21,7 @@
 #include <QKeyEvent>
 #include <QLabel>
 #include <QMouseEvent>
+#include <QMutex>
 #include <QPixmap>
 #include <QResizeEvent>
 #include <QString>
@@ -33,12 +34,13 @@ namespace br
 class BR_EXPORT_GUI ImageViewer : public QLabel
 {
     Q_OBJECT
+    QMutex mutex;
     QString defaultText;
     QImage src;
 
 public:
     explicit ImageViewer(QWidget *parent = 0);
-    void setDefaultText(const QString &text, bool async = false);
+    void setDefaultText(const QString &text);
     void setImage(const QString &file, bool async = false);
     void setImage(const QImage &image, bool async = false);
     void setImage(const QPixmap &pixmap, bool async = false);
diff --git a/sdk/core/core.cpp b/sdk/core/core.cpp
index fa6cf6d..9da8839 100644
--- a/sdk/core/core.cpp
+++ b/sdk/core/core.cpp
@@ -107,11 +107,13 @@ struct AlgorithmCore
 
     FileList enroll(File input, File gallery = File())
     {
+        FileList fileList;
+        try {
         if (gallery.isNull()) gallery = getMemoryGallery(input);
 
         QScopedPointer<Gallery> g(Gallery::make(gallery));
         if (g.isNull()) return FileList();
-        FileList fileList = g->files();
+        fileList = g->files();
         if (!fileList.isEmpty() && gallery.contains("cache"))
             return fileList; // Already enrolled
 
@@ -165,7 +167,9 @@ struct AlgorithmCore
             fprintf(stderr, "\rSPEED=%.1e  SIZE=%.4g  FAILURES=%d/%d  \n",
                     speed, totalBytes/totalCount, failureCount, totalCount);
         Globals->totalSteps = 0;
-
+        } catch (...) {
+            qFatal("Exception triggered during enrollment!");
+        }
         return fileList;
     }
 
@@ -183,6 +187,7 @@ struct AlgorithmCore
 
     void compare(File targetGallery, File queryGallery, File output)
     {
+	    try {
         if (output.exists() && output.getBool("cache")) return;
         if (queryGallery == ".") queryGallery = targetGallery;
 
@@ -221,6 +226,9 @@ struct AlgorithmCore
         const float speed = 1000 * Globals->totalSteps / Globals->startTime.elapsed() / std::max(1, abs(Globals->parallelism));
         if (!Globals->quiet && (Globals->totalSteps > 1)) fprintf(stderr, "\rSPEED=%.1e  \n", speed);
         Globals->totalSteps = 0;
+        } catch (...) {
+            qFatal("Exception triggered during comparison!");
+        }
     }
 
 private:
diff --git a/sdk/plugins/gallery.cpp b/sdk/plugins/gallery.cpp
index 83b53cb..d46d388 100644
--- a/sdk/plugins/gallery.cpp
+++ b/sdk/plugins/gallery.cpp
@@ -62,6 +62,7 @@ class galGallery : public Gallery
         while ((templates.size() < Globals->blockSize) && !stream.atEnd()) {
             Template m;
             stream >> m;
+			//qWarning("?? %s\n", qPrintable(m.file.name));
             templates.append(m);
         }
 
@@ -71,6 +72,7 @@ class galGallery : public Gallery
 
     void write(const Template &t)
     {
+		//qWarning("$$ %s\n", qPrintable(t.file.name));
         stream << t;
     }
 };
diff --git a/share/openbr/cmake/InstallDependencies.cmake b/share/openbr/cmake/InstallDependencies.cmake
index 4d260c3..44a1dbc 100644
--- a/share/openbr/cmake/InstallDependencies.cmake
+++ b/share/openbr/cmake/InstallDependencies.cmake
@@ -71,7 +71,7 @@ function(install_compiler_libraries)
     set(MINGW_DIR "MINGW_DIR-NOTFOUND" CACHE PATH "MinGW Path")
     get_filename_component(MINGW_DIR ${CMAKE_CXX_COMPILER} PATH)
     if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
-      install(FILES ${MINGW_DIR}/libgcc_s_sjlj-1.dll DESTINATION bin)
+      install(FILES ${MINGW_DIR}/libgcc_s_sjlj-1.dll ${MINGW_DIR}/libstdc++-6.dll DESTINATION bin)
     else()
       install(FILES ${MINGW_DIR}/libgcc_s_dw2-1.dll ${MINGW_DIR}/libstdc++-6.dll DESTINATION bin)
     endif()
diff --git a/share/openbr/models b/share/openbr/models
index 5bfe098..b560a33 160000
--- a/share/openbr/models
+++ b/share/openbr/models
@@ -1 +1 @@
-Subproject commit 5bfe0988716f6e7b926910d74f9696f002cdbfb6
+Subproject commit b560a337e5b47770234d4ab554c563b5043e3595