diff --git a/src/lib/app/mainapplication.cpp b/src/lib/app/mainapplication.cpp
index de83f285b..32764a791 100644
--- a/src/lib/app/mainapplication.cpp
+++ b/src/lib/app/mainapplication.cpp
@@ -863,6 +863,7 @@ RegisterQAppAssociation* MainApplication::associationManager()
         m_registerQAppAssociation->addCapability(".htm", "QupZilla.HTM", "HTM File", fileIconPath, RegisterQAppAssociation::FileAssociation);
         m_registerQAppAssociation->addCapability("http", "QupZilla.HTTP", "URL:HyperText Transfer Protocol", appIconPath, RegisterQAppAssociation::UrlAssociation);
         m_registerQAppAssociation->addCapability("https", "QupZilla.HTTPS", "URL:HyperText Transfer Protocol with Privacy", appIconPath, RegisterQAppAssociation::UrlAssociation);
+        m_registerQAppAssociation->addCapability("ftp", "QupZilla.FTP", "URL:File Transfer Protocol", appIconPath, RegisterQAppAssociation::UrlAssociation);
     }
     return m_registerQAppAssociation;
 }
diff --git a/src/lib/downloads/downloaditem.cpp b/src/lib/downloads/downloaditem.cpp
index f367471f8..fdcc3f818 100644
--- a/src/lib/downloads/downloaditem.cpp
+++ b/src/lib/downloads/downloaditem.cpp
@@ -320,13 +320,19 @@ void DownloadItem::stop(bool askForDeleteFile)
         return;
     }
     m_downloadStopped = true;
-    QString host = m_reply ? m_reply->url().host() : m_ftpDownloader->url().host();
+    QString host;
+    if (m_reply) {
+        host = m_reply->url().host();
+    }
+    else if (m_ftpDownloader) {
+        host = m_ftpDownloader->url().host();
+    }
     m_openAfterFinish = false;
     m_timer.stop();
     if (m_reply) {
         m_reply->abort();
     }
-    else {
+    else if (m_ftpDownloader) {
         m_ftpDownloader->abort();
         m_ftpDownloader->close();
     }
@@ -454,8 +460,8 @@ void DownloadItem::error()
         ui->downloadInfo->setText(tr("Error: ") + m_reply->errorString());
     }
     else if (m_ftpDownloader && m_ftpDownloader->error() != QFtp::NoError) {
-        ui->downloadInfo->setText(tr("Error: ") + m_ftpDownloader->errorString());
         stop(false);
+        ui->downloadInfo->setText(tr("Error: ") + m_ftpDownloader->errorString());
     }
 }
 
@@ -464,9 +470,10 @@ void DownloadItem::updateDownload()
 #ifdef DOWNMANAGER_DEBUG
     qDebug() << __FUNCTION__ ;
 #endif
-    bool downoaderIsFinished = (m_reply && m_reply->isFinished())
-                               || (m_ftpDownloader && m_ftpDownloader->isFinished());
-    if (ui->progressBar->maximum() == 0 && m_outputFile.isOpen() && downoaderIsFinished) {
+     // after caling stop() (from readyRead()) m_reply will be a dangling pointer,
+     // thus it should be checked after m_outputFile.isOpen()
+    if (ui->progressBar->maximum() == 0 && m_outputFile.isOpen() &&
+            ((m_reply && m_reply->isFinished()) || (m_ftpDownloader && m_ftpDownloader->isFinished()))) {
         downloadProgress(0, 0);
         finished();
     }
diff --git a/src/lib/tools/qztools.cpp b/src/lib/tools/qztools.cpp
index 04d69c96e..c8ba509ba 100644
--- a/src/lib/tools/qztools.cpp
+++ b/src/lib/tools/qztools.cpp
@@ -433,8 +433,14 @@ QString QzTools::buildSystem()
 QIcon QzTools::iconFromFileName(const QString &fileName)
 {
     QFileInfo tempInfo(fileName);
+    if (m_iconCache.contains(tempInfo.suffix())) {
+        return m_iconCache.value(tempInfo.suffix());
+    }
+
     QTemporaryFile tempFile(mApp->tempPath() + "/XXXXXX." + tempInfo.suffix());
     tempFile.open();
     tempInfo.setFile(tempFile.fileName());
-    return QFileIconProvider().icon(tempInfo);
+    QIcon icon(QFileIconProvider().icon(tempInfo));
+    m_iconCache.insert(tempInfo.suffix(), icon);
+    return icon;
 }
diff --git a/src/lib/tools/qztools.h b/src/lib/tools/qztools.h
index 3cdf38edb..41b516572 100644
--- a/src/lib/tools/qztools.h
+++ b/src/lib/tools/qztools.h
@@ -20,6 +20,7 @@
 
 #include <QList>
 #include <QString>
+#include <QHash>
 
 #include "qz_namespace.h"
 
@@ -73,6 +74,8 @@ bool listContainsIndex(const QList<T> &list, int index)
     return (index >= 0 && list.count() > index);
 }
 
+static QHash<QString, QIcon> m_iconCache;
+
 } // namespace
 
 #endif // GLOBALFUNCTIONS_H
diff --git a/windows/installer.nsi b/windows/installer.nsi
index 070c45845..5b5ad55aa 100644
--- a/windows/installer.nsi
+++ b/windows/installer.nsi
@@ -319,6 +319,7 @@ SectionGroup $(TITLE_SecSetASDefault) SecSetASDefault
     Section $(TITLE_SecProtocols) SecProtocols
 	  ${RegisterAssociation} "http" "$INSTDIR\qupzilla.exe" "QupZilla.HTTP" "URL:HyperText Transfer Protocol" "$INSTDIR\qupzilla.exe,0" "protocol"
 	  ${RegisterAssociation} "https" "$INSTDIR\qupzilla.exe" "QupZilla.HTTPS" "URL:HyperText Transfer Protocol with Privacy" "$INSTDIR\qupzilla.exe,0" "protocol"
+	  ${RegisterAssociation} "ftp" "$INSTDIR\qupzilla.exe" "QupZilla.FTP" "URL:File Transfer Protocol" "$INSTDIR\qupzilla.exe,0" "protocol"
 	  ${UpdateSystemIcons}
     SectionEnd
 SectionGroupEnd
@@ -399,6 +400,7 @@ notRunning:
   ${UnRegisterAssociation} ".html" "QupZilla.HTML" "$INSTDIR\qupzilla.exe" "file"
   ${UnRegisterAssociation} "http" "QupZilla.HTTP" "$INSTDIR\qupzilla.exe" "protocol"
   ${UnRegisterAssociation} "https" "QupZilla.HTTPS" "$INSTDIR\qupzilla.exe" "protocol"
+  ${UnRegisterAssociation} "ftp" "QupZilla.FTP" "$INSTDIR\qupzilla.exe" "protocol"
   ${UpdateSystemIcons}
 SectionEnd
 
@@ -476,6 +478,7 @@ Function RegisterCapabilities
 			${CreateProgId} "QupZilla.HTML" "$INSTDIR\qupzilla.exe" $(FILE_Html) "$INSTDIR\qupzilla.exe,1"
 			${CreateProgId} "QupZilla.HTTP" "$INSTDIR\qupzilla.exe" "URL:HyperText Transfer Protocol" "$INSTDIR\qupzilla.exe,0"
 			${CreateProgId} "QupZilla.HTTPS" "$INSTDIR\qupzilla.exe" "URL:HyperText Transfer Protocol with Privacy" "$INSTDIR\qupzilla.exe,0"
+			${CreateProgId} "QupZilla.FTP" "$INSTDIR\qupzilla.exe" "URL:File Transfer Protocol" "$INSTDIR\qupzilla.exe,0"
 
 			; note: these lines just introduce capabilities of QupZilla to OS and don't change defaults!
 			WriteRegStr HKLM "${PRODUCT_CAPABILITIES_KEY}" "ApplicationDescription" "$(PRODUCT_DESC)"
@@ -485,6 +488,7 @@ Function RegisterCapabilities
 			WriteRegStr HKLM "${PRODUCT_CAPABILITIES_KEY}\FileAssociations" ".html" "QupZilla.HTML"
 			WriteRegStr HKLM "${PRODUCT_CAPABILITIES_KEY}\URLAssociations" "http" "QupZilla.HTTP"
 			WriteRegStr HKLM "${PRODUCT_CAPABILITIES_KEY}\URLAssociations" "https" "QupZilla.HTTPS"
+			WriteRegStr HKLM "${PRODUCT_CAPABILITIES_KEY}\URLAssociations" "ftp" "QupZilla.FTP"
 			WriteRegStr HKLM "${PRODUCT_CAPABILITIES_KEY}\Startmenu" "StartMenuInternet" "$INSTDIR\qupzilla.exe"
 			WriteRegStr HKLM "SOFTWARE\RegisteredApplications" "${PRODUCT_NAME}" "${PRODUCT_CAPABILITIES_KEY}"
 		${EndIf}