diff --git a/.vs/DiscImageChef/v15/Browse.VC.db b/.vs/DiscImageChef/v15/Browse.VC.db
index 87c60b9b7..646f29e72 100644
Binary files a/.vs/DiscImageChef/v15/Browse.VC.db and b/.vs/DiscImageChef/v15/Browse.VC.db differ
diff --git a/.vs/DiscImageChef/v15/sqlite3/storage.ide b/.vs/DiscImageChef/v15/sqlite3/storage.ide
index 5e7a292f9..0e5e772d6 100644
Binary files a/.vs/DiscImageChef/v15/sqlite3/storage.ide and b/.vs/DiscImageChef/v15/sqlite3/storage.ide differ
diff --git a/.vs/slnx.sqlite b/.vs/slnx.sqlite
index 250dd008e..77a193423 100644
Binary files a/.vs/slnx.sqlite and b/.vs/slnx.sqlite differ
diff --git a/DiscImageChef.Devices/Device/Constructor.cs b/DiscImageChef.Devices/Device/Constructor.cs
index e5c0a811e..865a032db 100644
--- a/DiscImageChef.Devices/Device/Constructor.cs
+++ b/DiscImageChef.Devices/Device/Constructor.cs
@@ -358,6 +358,11 @@ namespace DiscImageChef.Devices
                     if(ATAID.HasValue)
                         serial = ATAID.Value.SerialNumber;
                 }
+                else
+                {
+                    lastError = 0;
+                    error = false;
+                }
             }
 
             if((scsiSense && (usb || firewire)) || manufacturer == "ATA")
diff --git a/DiscImageChef.Devices/Windows/Command.cs b/DiscImageChef.Devices/Windows/Command.cs
index 5ad4609b9..323c1819e 100644
--- a/DiscImageChef.Devices/Windows/Command.cs
+++ b/DiscImageChef.Devices/Windows/Command.cs
@@ -81,7 +81,7 @@ namespace DiscImageChef.Devices.Windows
             Marshal.Copy(buffer, 0, sptd_sb.sptd.DataBuffer, buffer.Length);
 
             DateTime start = DateTime.Now;
-            bool hasError = Extern.DeviceIoControlScsi(fd, WindowsIoctl.IOCTL_SCSI_PASS_THROUGH_DIRECT, ref sptd_sb, (uint)Marshal.SizeOf(sptd_sb), ref sptd_sb,
+            bool hasError = !Extern.DeviceIoControlScsi(fd, WindowsIoctl.IOCTL_SCSI_PASS_THROUGH_DIRECT, ref sptd_sb, (uint)Marshal.SizeOf(sptd_sb), ref sptd_sb,
                             (uint)Marshal.SizeOf(sptd_sb), ref k, IntPtr.Zero);
             DateTime end = DateTime.Now;
 
@@ -154,7 +154,7 @@ namespace DiscImageChef.Devices.Windows
             Marshal.Copy(buffer, 0, aptd.DataBuffer, buffer.Length);
 
             DateTime start = DateTime.Now;
-            sense = Extern.DeviceIoControlAta(fd, WindowsIoctl.IOCTL_ATA_PASS_THROUGH, ref aptd, (uint)Marshal.SizeOf(aptd), ref aptd,
+            sense = !Extern.DeviceIoControlAta(fd, WindowsIoctl.IOCTL_ATA_PASS_THROUGH, ref aptd, (uint)Marshal.SizeOf(aptd), ref aptd,
                             (uint)Marshal.SizeOf(aptd), ref k, IntPtr.Zero);
             DateTime end = DateTime.Now;
 
@@ -231,7 +231,7 @@ namespace DiscImageChef.Devices.Windows
             Marshal.Copy(buffer, 0, aptd.DataBuffer, buffer.Length);
 
             DateTime start = DateTime.Now;
-            sense = Extern.DeviceIoControlAta(fd, WindowsIoctl.IOCTL_ATA_PASS_THROUGH, ref aptd, (uint)Marshal.SizeOf(aptd), ref aptd,
+            sense = !Extern.DeviceIoControlAta(fd, WindowsIoctl.IOCTL_ATA_PASS_THROUGH, ref aptd, (uint)Marshal.SizeOf(aptd), ref aptd,
                             (uint)Marshal.SizeOf(aptd), ref k, IntPtr.Zero);
             DateTime end = DateTime.Now;
 
@@ -315,7 +315,7 @@ namespace DiscImageChef.Devices.Windows
             Marshal.Copy(buffer, 0, aptd.DataBuffer, buffer.Length);
 
             DateTime start = DateTime.Now;
-            sense = Extern.DeviceIoControlAta(fd, WindowsIoctl.IOCTL_ATA_PASS_THROUGH, ref aptd, (uint)Marshal.SizeOf(aptd), ref aptd,
+            sense = !Extern.DeviceIoControlAta(fd, WindowsIoctl.IOCTL_ATA_PASS_THROUGH, ref aptd, (uint)Marshal.SizeOf(aptd), ref aptd,
                             (uint)Marshal.SizeOf(aptd), ref k, IntPtr.Zero);
             DateTime end = DateTime.Now;
 
diff --git a/DiscImageChef.Devices/Windows/ListDevices.cs b/DiscImageChef.Devices/Windows/ListDevices.cs
index 759650ecc..cc3a72eb1 100644
--- a/DiscImageChef.Devices/Windows/ListDevices.cs
+++ b/DiscImageChef.Devices/Windows/ListDevices.cs
@@ -100,7 +100,7 @@ namespace DiscImageChef.Devices.Windows
                 uint returned = 0;
                 int error = 0;
 
-                bool hasError = Extern.DeviceIoControlStorageQuery(fd, WindowsIoctl.IOCTL_STORAGE_QUERY_PROPERTY, ref query, (uint)Marshal.SizeOf(query), descriptorPtr, 1000, ref returned, IntPtr.Zero);
+                bool hasError = !Extern.DeviceIoControlStorageQuery(fd, WindowsIoctl.IOCTL_STORAGE_QUERY_PROPERTY, ref query, (uint)Marshal.SizeOf(query), descriptorPtr, 1000, ref returned, IntPtr.Zero);
 
                 if (hasError)
                     error = Marshal.GetLastWin32Error();
diff --git a/DiscImageChef.Tests/DiscImageChef.Tests.csproj b/DiscImageChef.Tests/DiscImageChef.Tests.csproj
index 64805b31c..2484688a8 100644
--- a/DiscImageChef.Tests/DiscImageChef.Tests.csproj
+++ b/DiscImageChef.Tests/DiscImageChef.Tests.csproj
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -170,13 +170,7 @@
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
-  <ItemGroup>
-    <Folder Include="Checksums\" />
-    <Folder Include="Filters\" />
-    <Folder Include="Filesystems\" />
-    <Folder Include="Devices\" />
-    <Folder Include="Partitions\" />
-  </ItemGroup>
+  <ItemGroup />
   <ItemGroup>
     <ProjectReference Include="..\DiscImageChef.Checksums\DiscImageChef.Checksums.csproj">
       <Project>{CC48B324-A532-4A45-87A6-6F91F7141E8D}</Project>
@@ -211,6 +205,9 @@
       <Name>DiscImageChef.Core</Name>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ProjectExtensions>
     <MonoDevelop>