diff --git a/machine_creator/DiskWriter.cpp b/machine_creator/DiskWriter.cpp
index afd3477..8bc58a2 100644
--- a/machine_creator/DiskWriter.cpp
+++ b/machine_creator/DiskWriter.cpp
@@ -70,7 +70,9 @@ bool PhysicalDevice::open(OpenMode flags)
     }
     else
     {
+        qWarning() << "Closing handle :(";
         CloseHandle(m_fileHandle);
+        m_fileHandle = INVALID_HANDLE_VALUE;
         return false;
     }
 #elif defined(Q_OS_LINUX)
@@ -160,7 +162,8 @@ void PhysicalDevice::lockVolume()
     {
         qDebug() << "Locking volume" << fileName();
 
-        if (DeviceIoControl(m_fileHandle, FSCTL_LOCK_VOLUME, NULL, 0, NULL, 0, &bytesRet, NULL))
+        auto ret = DeviceIoControl(m_fileHandle, FSCTL_LOCK_VOLUME, NULL, 0, NULL, 0, &bytesRet, NULL);
+        if (ret)
         {
             handleLocked = true;
             qDebug() << "Locked volume";
@@ -540,7 +543,10 @@ void DiskWriter::writeToRemovableDevice(const QString &filename, UsbDisk *d)
 #endif
     }
 
-    if (writtenBytes != totalBytes)
+    if (writtenBytes != totalBytes &&
+        totalBytes > 0) //when totalBytes is 0, it can be because the
+                        // source is compressed and KArchive can't know the final size.
+                        // Do not fail with error in that case
     {
         emit error("Writing failed");
         return;
@@ -559,6 +565,8 @@ void DiskWriter::writeToRemovableDevice(const QString &filename, UsbDisk *d)
     //Verification step
 
     qDebug() << "Verify...";
+    if (totalBytes == 0)
+        totalBytes = writtenBytes;
     writtenBytes = 0;
     timer.restart();
     new (&blake2bContext) blake2b_state;
diff --git a/machine_creator/DiskWriter.h b/machine_creator/DiskWriter.h
index 593eaf4..0d00082 100644
--- a/machine_creator/DiskWriter.h
+++ b/machine_creator/DiskWriter.h
@@ -29,7 +29,7 @@ class PhysicalDevice : public QFile
 
 protected:
 #if defined(Q_OS_WIN)
-    HANDLE m_fileHandle;
+    HANDLE m_fileHandle = INVALID_HANDLE_VALUE;
     bool handleLocked = false;
 
     void lockVolume();
diff --git a/machine_creator/StorageDelegate.cpp b/machine_creator/StorageDelegate.cpp
index f5d1028..6297b78 100644
--- a/machine_creator/StorageDelegate.cpp
+++ b/machine_creator/StorageDelegate.cpp
@@ -62,11 +62,7 @@ void StorageDelegate::paint(QPainter *painter, const QStyleOptionViewItem &optio
     painter->setFont(subFont);
 
     if (!(opt.state & QStyle::State_Selected))
-    {
-        QColor penColor = painter->pen().color();
-        penColor.setNamedColor("#A0A0A0");
-        painter->setPen(penColor);
-    }
+        painter->setPen(QColor::fromString("#A0A0A0"));
 
     painter->drawText(QRect(rect.left() + iconsize.width() + 8, rect.top()+rect.height()/2, rect.width() - iconsize.width() - 8, rect.height()/2),
                       opt.displayAlignment, subText);
diff --git a/machine_creator/UsbMonitor_win.cpp b/machine_creator/UsbMonitor_win.cpp
index f19fc4c..beb2762 100644
--- a/machine_creator/UsbMonitor_win.cpp
+++ b/machine_creator/UsbMonitor_win.cpp
@@ -40,7 +40,7 @@ UsbMonitor_win::~UsbMonitor_win()
         qWarning() << "Unable to unregister for device notifications";
 }
 
-bool UsbMonitor_win::nativeEvent(const QByteArray &eventType, void *message, long *result)
+bool UsbMonitor_win::nativeEvent(const QByteArray &eventType, void *message, qintptr *result)
 {
     Q_UNUSED(eventType);
     Q_UNUSED(result);
diff --git a/machine_creator/UsbMonitor_win.h b/machine_creator/UsbMonitor_win.h
index e8c826a..0eeee8c 100644
--- a/machine_creator/UsbMonitor_win.h
+++ b/machine_creator/UsbMonitor_win.h
@@ -44,7 +44,7 @@ class UsbMonitor_win: public QWidget
 
     HDEVNOTIFY notifyHandle = nullptr;
 
-    virtual bool nativeEvent(const QByteArray &eventType, void *message, long *result);
+    virtual bool nativeEvent(const QByteArray &eventType, void *message, qintptr *result) override;
 };
 
 #endif // USBMONITOR_WIN_H
diff --git a/machine_creator/drivelist/src/windows/list.cpp b/machine_creator/drivelist/src/windows/list.cpp
index 4947560..a063e87 100644
--- a/machine_creator/drivelist/src/windows/list.cpp
+++ b/machine_creator/drivelist/src/windows/list.cpp
@@ -397,7 +397,7 @@ bool GetPartitionTableType(HANDLE hPhysical, DeviceDescriptor *device) {
     &diskLayoutSize,
     NULL);
   if (!hasDiskLayout) {
-    free(diskLayout);
+    delete(diskLayout);
     return hasDiskLayout;
   }
   /*
@@ -442,7 +442,7 @@ bool GetPartitionTableType(HANDLE hPhysical, DeviceDescriptor *device) {
   } else if (diskLayout->PartitionStyle == PARTITION_STYLE_GPT) {
     device->partitionTableType = "gpt";
   }
-  free(diskLayout);
+  delete(diskLayout);
   return hasDiskLayout;
 }
 
diff --git a/machine_creator/machine_creator.pro b/machine_creator/machine_creator.pro
index ac34511..c65d073 100755
--- a/machine_creator/machine_creator.pro
+++ b/machine_creator/machine_creator.pro
@@ -105,7 +105,8 @@ win32 {
     LIBS += -lole32 -loleaut32 -luuid -lsetupapi
 
     #KArchive
-    INCLUDEPATH += C:/kderoot/include/KF5/KArchive \
+    INCLUDEPATH += C:/kderoot/include/KF5/ \
+        C:/kderoot/include/KF5/KArchive \
         /mxe/usr/i686-w64-mingw32.shared.posix/include/KF5/KArchive \
         /mxe/usr/i686-w64-mingw32.shared.posix/include/KF6/KArchive
     LIBS += -LC:/kderoot/lib \
diff --git a/machine_creator/mainwindow.cpp b/machine_creator/mainwindow.cpp
index 280fe78..f8cfc66 100755
--- a/machine_creator/mainwindow.cpp
+++ b/machine_creator/mainwindow.cpp
@@ -241,6 +241,8 @@ void MainWindow::writeError(QString error)
 
 void MainWindow::writeProgress(QString status, qint64 bytesReceived, qint64 bytesTotal, qint64 elapsedMs)
 {
+    //qDebug() << "writeProgress: " << status << bytesReceived << bytesTotal << elapsedMs;
+
     if (bytesTotal > 0)
     {
         ui->writeProgress->setMinimum (0);
@@ -256,6 +258,13 @@ void MainWindow::writeProgress(QString status, qint64 bytesReceived, qint64 byte
         double speed = bytesReceived * 1000.0 / elapsedMs;
         ui->speedWriteLabel->setText(tr("Speed: %1/s").arg(Utils::sizeHuman(speed)));
     }
+    else if (bytesTotal == 0 && bytesReceived > 0)
+    {
+        ui->writeLabel->setText(tr("%1 %2")
+                                    .arg(status, Utils::sizeHuman(bytesReceived)));
+        double speed = bytesReceived * 1000.0 / elapsedMs;
+        ui->speedWriteLabel->setText(tr("Speed: %1/s").arg(Utils::sizeHuman(speed)));
+    }
     else
     {
         ui->writeProgress->setMinimum(0);
@@ -271,7 +280,7 @@ void MainWindow::startWriteProcess()
 {
     startDownloadTime = QDateTime::currentDateTime();
 
-    QtConcurrent::run([=]()
+    auto f = QtConcurrent::run([=]()
     {
         diskWriter->writeToRemovableDevice(m_decompressedFile, m_disk);
     });