App will now redirect users that don't have full version of .net to download page.

NzbDrone/AppMain.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Diagnostics;
 using System.Reflection;
 using Ninject;
 using NzbDrone.Providers;
@@ -13,6 +14,30 @@ namespace NzbDrone
             {
                 Console.WriteLine("Starting NzbDrone Console. Version " + Assembly.GetExecutingAssembly().GetName().Version);
 
+                //Check if full version .NET is installed.
+                try
+                {
+                    //var webAssembly = Assembly.Load("System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a");
+                }
+                catch (Exception e)
+                {
+                    Console.WriteLine("It seems like you don't have full version of .NET framework installed. Press any key and you will be directed to download page.");
+                    Console.Read();
+
+                    try
+                    {
+                        Process.Start("http://www.microsoft.com/download/en/details.aspx?id=17851");
+                    }
+                    catch (Exception ex)
+                    {
+                        Console.WriteLine("Was unable to start default browser. Please visit http://www.microsoft.com/download/en/details.aspx?id=17851 to download .NET framework 4.");
+                        Console.ReadLine();
+                    }
+
+                    return;
+                }
+
+
                 CentralDispatch.Kernel.Get<Router>().Route(args);
             }
             catch (Exception e)