diff --git a/DepotDownloader/ContentDownloader.cs b/DepotDownloader/ContentDownloader.cs
index a937d72d..632bffca 100644
--- a/DepotDownloader/ContentDownloader.cs
+++ b/DepotDownloader/ContentDownloader.cs
@@ -180,14 +180,14 @@ namespace DepotDownloader
                 return null;
             }
 
-            SteamApps.AppInfoCallback.AppInfo app;
+            SteamApps.AppInfoCallback.App app;
             if (!steam3.AppInfo.TryGetValue((uint)appId, out app))
             {
                 return null;
             }
 
             KeyValue section_kv;
-            if (!app.Sections.TryGetValue((int)section, out section_kv))
+            if (!app.Sections.TryGetValue(section, out section_kv))
             {
                 return null;
             }
@@ -224,7 +224,7 @@ namespace DepotDownloader
                 return 0;
             }
 
-            SteamApps.AppInfoCallback.AppInfo app;
+            SteamApps.AppInfoCallback.App app;
             if (!steam3.AppInfo.TryGetValue((uint)appId, out app))
             {
                 return 0;
@@ -288,6 +288,7 @@ namespace DepotDownloader
                     Username = username,
                     Password = password,
 
+                    RequestSteam2Ticket = true,
                 }
             );
 
diff --git a/DepotDownloader/DepotDownloader.csproj b/DepotDownloader/DepotDownloader.csproj
index 81848bdc..a7cef36e 100644
--- a/DepotDownloader/DepotDownloader.csproj
+++ b/DepotDownloader/DepotDownloader.csproj
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>DepotDownloader</RootNamespace>
     <AssemblyName>DepotDownloader</AssemblyName>
-    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
@@ -31,6 +31,7 @@
     <IsWebBootstrapper>false</IsWebBootstrapper>
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
+    <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -100,6 +101,9 @@
       <Install>true</Install>
     </BootstrapperPackage>
   </ItemGroup>
+  <ItemGroup>
+    <None Include="app.config" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/DepotDownloader/Steam3Session.cs b/DepotDownloader/Steam3Session.cs
index 14f67b5b..73d3809a 100644
--- a/DepotDownloader/Steam3Session.cs
+++ b/DepotDownloader/Steam3Session.cs
@@ -26,7 +26,7 @@ namespace DepotDownloader
 
         public Dictionary<uint, byte[]> AppTickets { get; private set; }
         public Dictionary<uint, byte[]> DepotKeys { get; private set; }
-        public Dictionary<uint, SteamApps.AppInfoCallback.AppInfo> AppInfo { get; private set; }
+        public Dictionary<uint, SteamApps.AppInfoCallback.App> AppInfo { get; private set; }
         public Dictionary<uint, bool> AppInfoOverridesCDR { get; private set; }
 
         public SteamClient steamClient;
@@ -57,7 +57,7 @@ namespace DepotDownloader
 
             this.AppTickets = new Dictionary<uint, byte[]>();
             this.DepotKeys = new Dictionary<uint, byte[]>();
-            this.AppInfo = new Dictionary<uint, SteamApps.AppInfoCallback.AppInfo>();
+            this.AppInfo = new Dictionary<uint, SteamApps.AppInfoCallback.App>();
             this.AppInfoOverridesCDR = new Dictionary<uint, bool>();
 
             this.steamClient = new SteamClient();
@@ -86,7 +86,7 @@ namespace DepotDownloader
             if (bAborted || AppInfo.ContainsKey(appId))
                 return;
 
-            steamApps.GetAppInfo(appId);
+            steamApps.GetAppInfo( new uint[] { appId } );
 
             do
             {
@@ -159,7 +159,7 @@ namespace DepotDownloader
                 if ( callback == null )
                     break;
 
-                if ( callback.IsType<SteamClient.ConnectCallback>() )
+                if ( callback.IsType<SteamClient.ConnectedCallback>() )
                 {
                     Console.WriteLine( " Done!" );
                     bConnected = true;
@@ -167,9 +167,9 @@ namespace DepotDownloader
 
                     Console.Write( "Logging '{0}' into Steam3...", logonDetails.Username );
                 }
-                else if ( callback.IsType<SteamUser.LogOnCallback>() )
+                else if ( callback.IsType<SteamUser.LoggedOnCallback>() )
                 {
-                    var msg = callback as SteamUser.LogOnCallback;
+                    var msg = callback as SteamUser.LoggedOnCallback;
 
                     if ( msg.Result == EResult.AccountLogonDenied )
                     {
@@ -247,11 +247,11 @@ namespace DepotDownloader
                         AppInfo.Add(app.AppID, app);
 
                         KeyValue depots;
-                        if (app.Sections.TryGetValue((int)EAppInfoSection.Depots, out depots))
+                        if ( app.Sections.TryGetValue( EAppInfoSection.Depots, out depots ) )
                         {
-                            if (depots[app.AppID.ToString()]["OverridesCDDB"].AsBoolean(false))
+                            if ( depots[ app.AppID.ToString() ][ "OverridesCDDB" ].AsBoolean( false ) )
                             {
-                                AppInfoOverridesCDR[app.AppID] = true;
+                                AppInfoOverridesCDR[ app.AppID ] = true;
                             }
                         }
                     }
diff --git a/DepotDownloader/app.config b/DepotDownloader/app.config
new file mode 100644
index 00000000..cb2586be
--- /dev/null
+++ b/DepotDownloader/app.config
@@ -0,0 +1,3 @@
+<?xml version="1.0"?>
+<configuration>
+<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>