diff --git a/AUTHORS b/AUTHORS
index fc4e7d208..77eb4b16f 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -4,6 +4,7 @@ Author:
 Contributors:
 * Stefanos Antaris <santaris@csd.auth.gr>
 * Mohammad Dib <mdib@qbittorrent.org>
+* Mirco Chinelli <infinity89@fastwebmail.it>
 * Ishan Arora <ishan@qbittorrent.org>
 * Arnaud Demaizière <arnaud@qbittorrent.org>
 * Grigis Gaëtan <cipher16@gmail.com>
diff --git a/src/about_imp.h b/src/about_imp.h
index d5400c470..b902a5cbb 100644
--- a/src/about_imp.h
+++ b/src/about_imp.h
@@ -54,7 +54,7 @@ class about : public QDialog, private Ui::AboutDlg{
       te_thanks->append(QString::fromUtf8("<a name='top'></a>"));
       te_thanks->append(QString::fromUtf8("<ul><li>I would first like to thank sourceforge.net for hosting qBittorrent project and for their support.</li>"));
       te_thanks->append(QString::fromUtf8("<li>I am pleased that people from all over the world are contributing to qBittorrent: Ishan Arora (India), Arnaud Demaizière (France) and Stephanos Antaris (Greece). Their help is greatly appreciated</li>"));
-      te_thanks->append(QString::fromUtf8("<li>I also want to thank Στέφανος Αντάρης (santaris@csd.auth.gr) for working on Mac OS X packaging.</li>"));
+      te_thanks->append(QString::fromUtf8("<li>I also want to thank Στέφανος Αντάρης (santaris@csd.auth.gr) and Mirco Chinelli (infinity89@fastwebmail.it) for working on Mac OS X packaging.</li>"));
       te_thanks->append(QString::fromUtf8("<li>I am grateful to Peter Koeleman (peter@qbittorrent.org) and Mohammad Dib (mdib@qbittorrent.org) for working on qBittorrent port to Windows.</li>"));
       te_thanks->append(QString::fromUtf8("<li>Thanks a lot to our graphist Mateusz Toboła (tobejodok@qbittorrent.org) for his great work.</li></ul><br><br>"));
       te_thanks->scrollToAnchor(QString::fromUtf8("top"));
diff --git a/src/bittorrent.cpp b/src/bittorrent.cpp
index 207ec0a47..13f9ec9d8 100644
--- a/src/bittorrent.cpp
+++ b/src/bittorrent.cpp
@@ -285,23 +285,23 @@ void Bittorrent::configureSession() {
     startTorrentsInPause(Preferences::addTorrentsInPause());
     // * Scan dirs
     const QStringList &scan_dirs = Preferences::getScanDirs();
-    QVariantList downloadInDirList = Preferences::getDownloadInScanDirs();
+    QList<bool> downloadInDirList = Preferences::getDownloadInScanDirs();
     while(scan_dirs.size() > downloadInDirList.size()) {
-        downloadInDirList << QVariant(false);
+      downloadInDirList << false;
     }
     int i = 0;
     foreach (const QString &dir, scan_dirs) {
-        m_scanFolders->addPath(dir, downloadInDirList.at(i).toBool());
-        ++i;
+      m_scanFolders->addPath(dir, downloadInDirList.at(i));
+      ++i;
     }
     // * Export Dir
     const bool newTorrentExport = Preferences::isTorrentExportEnabled();
     if(torrentExport != newTorrentExport) {
-        torrentExport = newTorrentExport;
-        if(torrentExport) {
-            qDebug("Torrent export is enabled, exporting the current torrents");
-            exportTorrentFiles(Preferences::getExportDir());
-        }
+      torrentExport = newTorrentExport;
+      if(torrentExport) {
+        qDebug("Torrent export is enabled, exporting the current torrents");
+        exportTorrentFiles(Preferences::getExportDir());
+      }
     }
     // Connection
     // * Ports binding
diff --git a/src/eventmanager.cpp b/src/eventmanager.cpp
index 25b27f7a8..5bdbdc52e 100644
--- a/src/eventmanager.cpp
+++ b/src/eventmanager.cpp
@@ -131,7 +131,11 @@ void EventManager::setGlobalPreferences(QVariantMap m) const {
   if(m.contains("temp_path"))
     Preferences::setTempPath(m["temp_path"].toString());
   if(m.contains("scan_dirs") && m.contains("download_in_scan_dirs")) {
-    QVariantList download_at_path = m["download_in_scan_dirs"].toList();
+    QVariantList download_at_path_tmp = m["download_in_scan_dirs"].toList();
+    QList<bool> download_at_path;
+    foreach(QVariant var, download_at_path_tmp) {
+      download_at_path << var.toBool();
+    }
     QStringList old_folders = Preferences::getScanDirs();
     QStringList new_folders = m["scan_dirs"].toStringList();
     if(download_at_path.size() == new_folders.size()) {
@@ -147,7 +151,7 @@ void EventManager::setGlobalPreferences(QVariantMap m) const {
       foreach(const QString &new_folder, new_folders) {
         // Update new folders
         if(!old_folders.contains(new_folder)) {
-          BTSession->getScanFoldersModel()->addPath(new_folder, download_at_path.at(i).toBool());
+          BTSession->getScanFoldersModel()->addPath(new_folder, download_at_path.at(i));
         }
         ++i;
       }
@@ -256,7 +260,11 @@ QVariantMap EventManager::getGlobalPreferences() const {
   data["temp_path_enabled"] = Preferences::isTempPathEnabled();
   data["temp_path"] = Preferences::getTempPath();
   data["scan_dirs"] = Preferences::getScanDirs();
-  data["download_in_scan_dirs"] = Preferences::getDownloadInScanDirs();
+  QVariantList var_list;
+  foreach(bool b, Preferences::getDownloadInScanDirs()) {
+    var_list << b;
+  }
+  data["download_in_scan_dirs"] = var_list;
   data["export_dir_enabled"] = Preferences::isTorrentExportEnabled();
   data["export_dir"] = Preferences::getExportDir();
   data["preallocate_all"] = Preferences::preAllocateAllFiles();
diff --git a/src/misc.cpp b/src/misc.cpp
index c0677e237..951198b05 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -75,7 +75,7 @@ QString misc::QDesktopServicesDataLocation() {
   if (!QCoreApplication::applicationName().isEmpty())
     result = result + QLatin1String("\\") + qApp->applicationName();
   if(!result.endsWith("\\"))
-      result += "\\";
+    result += "\\";
   return result;
 #else
 #ifdef Q_WS_MAC
@@ -484,3 +484,33 @@ QString misc::userFriendlyDuration(qlonglong seconds) {
   }
   return QString::fromUtf8("∞");
 }
+
+QStringList misc::toStringList(const QList<bool> &l) {
+  QStringList ret;
+  foreach(const bool &b, l) {
+    if(b)
+      ret << "1";
+    else
+      ret << "0";
+  }
+  return ret;
+}
+
+QList<int> misc::intListfromStringList(const QStringList &l) {
+  QList<int> ret;
+  foreach(const QString &s, l) {
+    ret << s.toInt();
+  }
+  return ret;
+}
+
+QList<bool> misc::boolListfromStringList(const QStringList &l) {
+  QList<bool> ret;
+    foreach(const QString &s, l) {
+      if(s == "1")
+        ret << true;
+      else
+        ret << false;
+    }
+    return ret;
+}
diff --git a/src/misc.h b/src/misc.h
index 9126910a3..c8307dd9f 100644
--- a/src/misc.h
+++ b/src/misc.h
@@ -114,6 +114,11 @@ public:
   // Take a number of seconds and return an user-friendly
   // time duration like "1d 2h 10m".
   static QString userFriendlyDuration(qlonglong seconds);
+
+  // Convert functions
+  static QStringList toStringList(const QList<bool> &l);
+  static QList<int> intListfromStringList(const QStringList &l);
+  static QList<bool> boolListfromStringList(const QStringList &l);
 };
 
 //  Trick to get a portable sleep() function
diff --git a/src/peerlistwidget.cpp b/src/peerlistwidget.cpp
index d66197571..78b4ceb23 100644
--- a/src/peerlistwidget.cpp
+++ b/src/peerlistwidget.cpp
@@ -44,8 +44,6 @@
 #include <QMenu>
 #include <vector>
 
-Q_DECLARE_METATYPE(QList<int>)
-
 PeerListWidget::PeerListWidget(PropertiesWidget *parent): properties(parent), display_flags(false) {
   // Visual settings
   setRootIsDecorated(false);
@@ -246,7 +244,7 @@ void PeerListWidget::clear() {
 
 void PeerListWidget::loadSettings() {
   QSettings settings(QString::fromUtf8("qBittorrent"), QString::fromUtf8("qBittorrent"));
-  QList<int> contentColsWidths = settings.value(QString::fromUtf8("TorrentProperties/Peers/peersColsWidth"), QVariantList()).value<QList<int> >();
+  QList<int> contentColsWidths = misc::intListfromStringList(settings.value(QString::fromUtf8("TorrentProperties/Peers/peersColsWidth")).toStringList());
   if(!contentColsWidths.empty()) {
     for(int i=0; i<contentColsWidths.size(); ++i) {
       setColumnWidth(i, contentColsWidths.at(i));
@@ -268,11 +266,11 @@ void PeerListWidget::loadSettings() {
 
 void PeerListWidget::saveSettings() const {
   QSettings settings(QString::fromUtf8("qBittorrent"), QString::fromUtf8("qBittorrent"));
-  QList<int> contentColsWidths;
+  QStringList contentColsWidths;
   for(int i=0; i<listModel->columnCount(); ++i) {
-    contentColsWidths.append(columnWidth(i));
+    contentColsWidths << QString::number(columnWidth(i));
   }
-  settings.setValue(QString::fromUtf8("TorrentProperties/Peers/peersColsWidth"), QVariant::fromValue<QList<int> >(contentColsWidths));
+  settings.setValue(QString::fromUtf8("TorrentProperties/Peers/peersColsWidth"), contentColsWidths);
   // Save sorted column
   Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
   QString sortOrderLetter;
diff --git a/src/preferences.h b/src/preferences.h
index 07b7d2eb3..8fb8f90a5 100644
--- a/src/preferences.h
+++ b/src/preferences.h
@@ -36,6 +36,7 @@
 #include <QPair>
 #include <QDir>
 #include <QTime>
+#include <QList>
 
 #ifndef DISABLE_GUI
 #include <QApplication>
@@ -47,6 +48,8 @@
 #include <QDesktopServices>
 #endif
 
+#include "misc.h"
+
 #define QBT_REALM "Web UI Access"
 enum scheduler_days { EVERY_DAY, WEEK_DAYS, WEEK_ENDS, MON, TUE, WED, THU, FRI, SAT, SUN };
 
@@ -213,14 +216,14 @@ public:
     settings.setValue(QString::fromUtf8("Preferences/Downloads/ScanDirs"), dirs);
   }
 
-  static QVariantList getDownloadInScanDirs() {
+  static QList<bool> getDownloadInScanDirs() {
     QSettings settings("qBittorrent", "qBittorrent");
-    return settings.value(QString::fromUtf8("Preferences/Downloads/DownloadInScanDirs"), QVariantList()).toList();
+    return misc::boolListfromStringList(settings.value(QString::fromUtf8("Preferences/Downloads/DownloadInScanDirs")).toStringList());
   }
 
-  static void setDownloadInScanDirs(const QVariantList &list) {
+  static void setDownloadInScanDirs(const QList<bool> &list) {
     QSettings settings("qBittorrent", "qBittorrent");
-    settings.setValue(QString::fromUtf8("Preferences/Downloads/DownloadInScanDirs"), list);
+    settings.setValue(QString::fromUtf8("Preferences/Downloads/DownloadInScanDirs"), misc::toStringList(list));
   }
 
   static bool isTorrentExportEnabled() {
diff --git a/src/propertieswidget.cpp b/src/propertieswidget.cpp
index dce3493e6..3f48eda4b 100644
--- a/src/propertieswidget.cpp
+++ b/src/propertieswidget.cpp
@@ -52,8 +52,6 @@
 #include "downloadedpiecesbar.h"
 #include "pieceavailabilitybar.h"
 
-Q_DECLARE_METATYPE(QList<int>)
-
 #ifdef Q_WS_MAC
 #define DEFAULT_BUTTON_CSS "QPushButton {border: 1px solid rgb(85, 81, 91);border-radius: 3px;padding: 2px; margin-left: 8px; margin-right: 8px;}"
 #define SELECTED_BUTTON_CSS "QPushButton {border: 1px solid rgb(85, 81, 91);border-radius: 3px;padding: 2px;background-color: rgb(255, 208, 105); margin-left: 8px; margin-right: 8px;}"
@@ -260,7 +258,7 @@ void PropertiesWidget::loadTorrentInfos(QTorrentHandle &_h) {
 
 void PropertiesWidget::readSettings() {
   QSettings settings(QString::fromUtf8("qBittorrent"), QString::fromUtf8("qBittorrent"));
-  QList<int> contentColsWidths = settings.value(QString::fromUtf8("TorrentProperties/filesColsWidth"), QVariantList()).value<QList<int> >();
+  QList<int> contentColsWidths = misc::intListfromStringList(settings.value(QString::fromUtf8("TorrentProperties/filesColsWidth")).toStringList());
   if(contentColsWidths.empty()) {
     filesList->header()->resizeSection(0, 300);
   } else {
@@ -287,11 +285,11 @@ void PropertiesWidget::readSettings() {
 void PropertiesWidget::saveSettings() {
   QSettings settings(QString::fromUtf8("qBittorrent"), QString::fromUtf8("qBittorrent"));
   settings.setValue("TorrentProperties/Visible", state==VISIBLE);
-  QList<int> contentColsWidths;
+  QStringList contentColsWidths;
   for(int i=0; i<PropListModel->columnCount(); ++i) {
-    contentColsWidths.append(filesList->columnWidth(i));
+    contentColsWidths << QString::number(filesList->columnWidth(i));
   }
-  settings.setValue(QString::fromUtf8("TorrentProperties/filesColsWidth"), QVariant::fromValue<QList<int> >(contentColsWidths));
+  settings.setValue(QString::fromUtf8("TorrentProperties/filesColsWidth"), contentColsWidths);
   // Splitter sizes
   QSplitter *hSplitter = static_cast<QSplitter*>(parentWidget());
   QList<int> sizes;
diff --git a/src/rss.h b/src/rss.h
index f8be682c0..459b5c20d 100644
--- a/src/rss.h
+++ b/src/rss.h
@@ -345,7 +345,7 @@ public:
     return item;
   }
 
-  static RssItem* fromHash(RssStream* parent, QHash<QString, QVariant> h) {
+  static RssItem* fromHash(RssStream* parent, const QHash<QString, QVariant> &h) {
     return new RssItem(parent, h.value("id", "").toString(), h["title"].toString(), h["torrent_url"].toString(), h["news_link"].toString(),
                        h["description"].toString(), h["date"].toDateTime(), h["author"].toString(), h["read"].toBool());
   }
diff --git a/src/rss_imp.cpp b/src/rss_imp.cpp
index 207f281bb..9de8c4ccf 100644
--- a/src/rss_imp.cpp
+++ b/src/rss_imp.cpp
@@ -232,13 +232,12 @@ void RSSImp::deleteSelectedItems() {
 void RSSImp::loadFoldersOpenState() {
   QSettings settings("qBittorrent", "qBittorrent");
   settings.beginGroup("Rss");
-  QVariantList open_folders = settings.value("open_folders", QVariantList()).toList();
+  QStringList open_folders = settings.value("open_folders", QStringList()).toStringList();
   settings.endGroup();
-  foreach(QVariant var_path, open_folders) {
-    QStringList path = var_path.toString().split("\\");
+  foreach(QString var_path, open_folders) {
+    QStringList path = var_path.split("\\");
     QTreeWidgetItem *parent = 0;
     foreach(QString name, path) {
-      QList<QTreeWidgetItem*> children;
       int nbChildren = 0;
       if(parent)
         nbChildren = parent->childCount();
@@ -262,7 +261,7 @@ void RSSImp::loadFoldersOpenState() {
 }
 
 void RSSImp::saveFoldersOpenState() {
-  QVariantList open_folders;
+  QStringList open_folders;
   QList<QTreeWidgetItem*> items = listStreams->getAllOpenFolders();
   foreach(QTreeWidgetItem* item, items) {
     QString path = listStreams->getItemPath(item).join("\\");
diff --git a/src/torrentadditiondlg.h b/src/torrentadditiondlg.h
index 0245fe0a5..368ceaedb 100644
--- a/src/torrentadditiondlg.h
+++ b/src/torrentadditiondlg.h
@@ -56,7 +56,6 @@
 #include "transferlistwidget.h"
 
 using namespace libtorrent;
-Q_DECLARE_METATYPE(QList<int>)
 
 class torrentAdditionDialog : public QDialog, private Ui_addTorrentDialog{
   Q_OBJECT
@@ -119,7 +118,7 @@ public:
     resize(settings.value(QString::fromUtf8("TorrentAdditionDlg/size"), size()).toSize());
     move(settings.value(QString::fromUtf8("TorrentAdditionDlg/pos"), misc::screenCenter(this)).toPoint());
     // Restore column width
-    const QList<int> &contentColsWidths = settings.value(QString::fromUtf8("TorrentAdditionDlg/filesColsWidth")).value<QList<int> >();
+    const QList<int> &contentColsWidths = misc::intListfromStringList(settings.value(QString::fromUtf8("TorrentAdditionDlg/filesColsWidth")).toStringList());
     if(contentColsWidths.empty()) {
       torrentContentList->header()->resizeSection(0, 200);
     } else {
@@ -132,12 +131,12 @@ public:
   void saveSettings() {
     if(is_magnet) return;
     QSettings settings(QString::fromUtf8("qBittorrent"), QString::fromUtf8("qBittorrent"));
-    QList<int> contentColsWidths;
+    QStringList contentColsWidths;
     // -1 because we hid PROGRESS column
     for(int i=0; i<PropListModel->columnCount()-1; ++i) {
-      contentColsWidths.append(torrentContentList->columnWidth(i));
+      contentColsWidths << QString::number(torrentContentList->columnWidth(i));
     }
-    settings.setValue(QString::fromUtf8("TorrentAdditionDlg/filesColsWidth"), QVariant::fromValue<QList<int> >(contentColsWidths));
+    settings.setValue(QString::fromUtf8("TorrentAdditionDlg/filesColsWidth"), contentColsWidths);
     settings.setValue("TorrentAdditionDlg/size", size());
     settings.setValue("TorrentAdditionDlg/pos", pos());
   }
diff --git a/src/torrentpersistentdata.h b/src/torrentpersistentdata.h
index 3f9d162f4..44d1b2184 100644
--- a/src/torrentpersistentdata.h
+++ b/src/torrentpersistentdata.h
@@ -69,9 +69,9 @@ public:
     QHash<QString, QVariant> all_data = settings.value("torrents-tmp", QHash<QString, QVariant>()).toHash();
     QHash<QString, QVariant> data = all_data[hash].toHash();
     std::vector<int>::const_iterator pp_it = pp.begin();
-    QVariantList pieces_priority;
+    QStringList pieces_priority;
     while(pp_it != pp.end()) {
-      pieces_priority << *pp_it;
+      pieces_priority << QString::number(*pp_it);
       pp_it++;
     }
     data["files_priority"] = pieces_priority;
@@ -179,9 +179,9 @@ public:
     QHash<QString, QVariant> data = all_data[hash].toHash();
     std::vector<int> fp;
     if(data.contains("files_priority")) {
-      QVariantList list_var = data["files_priority"].toList();
-      foreach(const QVariant& var, list_var) {
-        fp.push_back(var.toInt());
+      QList<int> list_var = misc::intListfromStringList(data["files_priority"].toStringList());
+      foreach(int var, list_var) {
+        fp.push_back(var);
       }
     }
     return fp;
diff --git a/src/trackerlist.cpp b/src/trackerlist.cpp
index d0343d82b..29d8c3bb0 100644
--- a/src/trackerlist.cpp
+++ b/src/trackerlist.cpp
@@ -42,8 +42,6 @@
 #include "misc.h"
 #include "bittorrent.h"
 
-Q_DECLARE_METATYPE(QList<int>)
-
 TrackerList::TrackerList(PropertiesWidget *properties): QTreeWidget(), properties(properties) {
   // Graphical settings
   setRootIsDecorated(false);
@@ -363,7 +361,7 @@ void TrackerList::showTrackerListMenu(QPoint) {
 
 void TrackerList::loadSettings() {
   QSettings settings(QString::fromUtf8("qBittorrent"), QString::fromUtf8("qBittorrent"));
-  QList<int> contentColsWidths = settings.value(QString::fromUtf8("TorrentProperties/Trackers/trackersColsWidth")).value<QList<int> >();
+  QList<int> contentColsWidths = misc::intListfromStringList(settings.value(QString::fromUtf8("TorrentProperties/Trackers/trackersColsWidth")).toStringList());
   if(!contentColsWidths.empty()) {
     for(int i=0; i<contentColsWidths.size(); ++i) {
       setColumnWidth(i, contentColsWidths.at(i));
@@ -375,9 +373,9 @@ void TrackerList::loadSettings() {
 
 void TrackerList::saveSettings() const {
   QSettings settings(QString::fromUtf8("qBittorrent"), QString::fromUtf8("qBittorrent"));
-  QList<int> contentColsWidths;
+  QStringList contentColsWidths;
   for(int i=0; i<columnCount(); ++i) {
-    contentColsWidths.append(columnWidth(i));
+    contentColsWidths << QString::number(columnWidth(i));
   }
-  settings.setValue(QString::fromUtf8("TorrentProperties/Trackers/trackersColsWidth"), QVariant::fromValue<QList<int> >(contentColsWidths));
+  settings.setValue(QString::fromUtf8("TorrentProperties/Trackers/trackersColsWidth"), contentColsWidths);
 }
diff --git a/src/transferlistwidget.cpp b/src/transferlistwidget.cpp
index 5568cc5c4..49c9853ba 100644
--- a/src/transferlistwidget.cpp
+++ b/src/transferlistwidget.cpp
@@ -51,8 +51,6 @@
 #include <QRegExp>
 #include <vector>
 
-Q_DECLARE_METATYPE(QList<int>)
-
 TransferListWidget::TransferListWidget(QWidget *parent, GUI *main_window, Bittorrent *_BTSession):
     QTreeView(parent), BTSession(_BTSession), main_window(main_window) {
   QSettings settings("qBittorrent", "qBittorrent");
@@ -1219,11 +1217,11 @@ void TransferListWidget::saveColWidthList() {
     }
   }
   settings.setValue(QString::fromUtf8("TransferListColsWidth"), new_width_list.join(QString::fromUtf8(" ")));
-  QList<int> visualIndexes;
+  QStringList visualIndexes;
   for(int i=0; i<nbColumns; ++i) {
-    visualIndexes.append(header()->visualIndex(i));
+    visualIndexes << QString::number(header()->visualIndex(i));
   }
-  settings.setValue(QString::fromUtf8("TransferListVisualIndexes"), QVariant::fromValue< QList<int> >(visualIndexes));
+  settings.setValue(QString::fromUtf8("TransferListVisualIndexes"), visualIndexes);
   qDebug("Download list columns width saved");
 }
 
@@ -1243,7 +1241,7 @@ bool TransferListWidget::loadColWidthList() {
   for(unsigned int i=0; i<listSize; ++i) {
     header()->resizeSection(i, width_list.at(i).toInt());
   }
-  const QList<int> visualIndexes = settings.value(QString::fromUtf8("TransferListVisualIndexes")).value<QList<int> >();
+  const QList<int> visualIndexes = misc::intListfromStringList(settings.value(QString::fromUtf8("TransferListVisualIndexes")).toStringList());
   if(visualIndexes.size() != listModel->columnCount()-1) {
     qDebug("Corrupted values for transfer list columns indexes");
     return false;