diff --git a/rtengine/rtthumbnail.cc b/rtengine/rtthumbnail.cc
index 1ffaf939a..3e970ed0d 100644
--- a/rtengine/rtthumbnail.cc
+++ b/rtengine/rtthumbnail.cc
@@ -1483,7 +1483,6 @@ IImage8* Thumbnail::processImage (const procparams::ProcParams& params, eSensorT
     delete labView;
     delete baseImg;
 
-    /*
     // calculate scale
     if (params.coarse.rotate == 90 || params.coarse.rotate == 270) {
         myscale = scale * thumbImg->getWidth() / fh;
@@ -1495,17 +1494,19 @@ IImage8* Thumbnail::processImage (const procparams::ProcParams& params, eSensorT
     // apply crop
     if (params.crop.enabled) {
         int ix = 0;
-        for (int i=0; i<fh; i++)
-            for (int j=0; j<fw; j++)
-                if (i<params.crop.y/myscale || i>(params.crop.y+params.crop.h)/myscale || j<params.crop.x/myscale || j>(params.crop.x+params.crop.w)/myscale) {
+        for (int i = 0; i < fh; ++i) {
+            for (int j = 0; j < fw; ++j) {
+                if (i < params.crop.y * myscale || i > (params.crop.y + params.crop.h) * myscale || j < params.crop.x * myscale || j > (params.crop.x + params.crop.w) * myscale) {
                     readyImg->data[ix++] /= 3;
                     readyImg->data[ix++] /= 3;
                     readyImg->data[ix++] /= 3;
-                }
-                else
+                } else {
                     ix += 3;
+                }
+            }
+        }
     }
-    */
+
 
     return readyImg;
 }
diff --git a/rtgui/options.cc b/rtgui/options.cc
index 640aa0243..b667f8679 100644
--- a/rtgui/options.cc
+++ b/rtgui/options.cc
@@ -2475,6 +2475,18 @@ bool Options::has_retained_extention(const Glib::ustring& fname)
     return parsedExtensionsSet.find(getExtension(fname).lowercase()) != parsedExtensionsSet.end();
 }
 
+// Pattern matches "5.1" from "5.1-23-g12345678", when comparing option.version to RTVERSION
+bool Options::is_new_version() {
+    const std::string vs[] = {versionString, version};
+    std::vector<std::string> vMajor;
+
+    for (const auto& v : vs) {
+        vMajor.emplace_back(v, 0, v.find_first_not_of("0123456789."));
+    }
+
+    return vMajor.size() == 2 && vMajor[0] != vMajor[1];
+}
+
 /*
  * return true if ext is an enabled extension
  */
diff --git a/rtgui/options.h b/rtgui/options.h
index d1d14a11f..0c580b034 100644
--- a/rtgui/options.h
+++ b/rtgui/options.h
@@ -426,6 +426,7 @@ public:
     Glib::ustring findProfilePath (Glib::ustring &profName);
     bool is_parse_extention (Glib::ustring fname);
     bool has_retained_extention (const Glib::ustring& fname);
+    bool is_new_version();
     bool is_extention_enabled (const Glib::ustring& ext);
     bool is_defProfRawMissing();
     bool is_bundledDefProfRawMissing();
diff --git a/rtgui/rtimage.cc b/rtgui/rtimage.cc
index 3fdf743f5..5ae3e4ddb 100644
--- a/rtgui/rtimage.cc
+++ b/rtgui/rtimage.cc
@@ -169,7 +169,7 @@ void RTImage::init()
     scaleBack = RTScalable::getScale();
 }
 
-void RTImage::cleanup()
+void RTImage::cleanup(bool all)
 {
     for (auto& entry : pixbufCache) {
         entry.second.reset();
@@ -177,7 +177,7 @@ void RTImage::cleanup()
     for (auto& entry : surfaceCache) {
         entry.second.clear();
     }
-    RTScalable::cleanup();
+    RTScalable::cleanup(all);
 }
 
 void RTImage::updateImages()
diff --git a/rtgui/rtimage.h b/rtgui/rtimage.h
index 244d0030a..15978f65c 100644
--- a/rtgui/rtimage.h
+++ b/rtgui/rtimage.h
@@ -52,7 +52,7 @@ public:
 
 
     static void init();
-    static void cleanup();
+    static void cleanup(bool all = false);
     static void updateImages ();
     static void setDPInScale (const double newDPI, const int newScale);
     static void setScale (const int newScale);
diff --git a/rtgui/rtscalable.cc b/rtgui/rtscalable.cc
index 079ece8d2..ae3214520 100644
--- a/rtgui/rtscalable.cc
+++ b/rtgui/rtscalable.cc
@@ -119,7 +119,7 @@ void RTScalable::deleteDir(const Glib::ustring& path)
     }
 }
 
-void RTScalable::cleanup()
+void RTScalable::cleanup(bool all)
 {
     Glib::ustring imagesCacheFolder = Glib::build_filename (options.cacheBaseDir, "svg2png");
     Glib::ustring sDPI = Glib::ustring::compose("%1", (int)getTweakedDPI());
@@ -134,7 +134,7 @@ void RTScalable::cleanup()
                 continue;
             }
 
-            if (fileName != sDPI) {
+            if (all || fileName != sDPI) {
                 deleteDir(filePath);
             }
         }
diff --git a/rtgui/rtscalable.h b/rtgui/rtscalable.h
index e6180eaa1..b8db9953c 100644
--- a/rtgui/rtscalable.h
+++ b/rtgui/rtscalable.h
@@ -50,7 +50,7 @@ public:
 #endif
 
     static void init(Gtk::Window *window);
-    static void cleanup();
+    static void cleanup(bool all = false);
     static double getDPI ();
     static double getTweakedDPI ();   // The returned value is tweaked DPI to adapt to main the font size. Maybe not an ideal solution.
     static int getScale ();
diff --git a/rtgui/rtwindow.cc b/rtgui/rtwindow.cc
index 85b902727..131016cb0 100644
--- a/rtgui/rtwindow.cc
+++ b/rtgui/rtwindow.cc
@@ -95,6 +95,9 @@ RTWindow::RTWindow ()
     , fpanel (nullptr)
 {
 
+    if (options.is_new_version()) {
+        RTImage::cleanup(true);
+    }
     cacheMgr->init ();
     ProfilePanel::init (this);
 
@@ -475,16 +478,8 @@ void RTWindow::on_realize ()
     mainWindowCursorManager.init (get_window());
 
     // Display release notes only if new major version.
-    // Pattern matches "5.1" from "5.1-23-g12345678"
-    const std::string vs[] = {versionString, options.version};
-    std::vector<std::string> vMajor;
-
-    for (const auto& v : vs) {
-        vMajor.emplace_back(v, 0, v.find_first_not_of("0123456789."));
-    }
-
     bool waitForSplash = false;
-    if (vMajor.size() == 2 && vMajor[0] != vMajor[1]) {
+    if (options.is_new_version()) {
         // Update the version parameter with the right value
         options.version = versionString;
 
diff --git a/rtgui/rtwindow.h b/rtgui/rtwindow.h
index d037d8875..48662858f 100644
--- a/rtgui/rtwindow.h
+++ b/rtgui/rtwindow.h
@@ -53,7 +53,6 @@ private:
     {
         return !options.tabbedUI && ! (options.multiDisplayMode > 0);
     };
-    void findVerNumbers (int* numbers, Glib::ustring versionStr);
 
     bool on_expose_event_epanel (GdkEventExpose* event);
     bool on_expose_event_fpanel (GdkEventExpose* event);