Swallow errors while trying to load types.

src/Microsoft.AspNet.Mvc/DefaultControllerFactory.cs

@@ -1,5 +1,7 @@
 using System;
+using System.Diagnostics;
 using System.Linq;
+using System.Reflection;
 using Microsoft.AspNet.Abstractions;
 using Microsoft.AspNet.DependencyInjection;
 
@@ -22,6 +24,8 @@ namespace Microsoft.AspNet.Mvc
             }
 
             foreach (var a in AppDomain.CurrentDomain.GetAssemblies())
+            {
+                try
                 {
                     var type = a.GetType(controllerName) ??
                                a.GetType(a.GetName().Name + "." + controllerName);
@@ -34,6 +38,15 @@ namespace Microsoft.AspNet.Mvc
                         return ActivatorUtilities.CreateInstance(_serviceProvider, type);
                     }
                 }
+                catch (ReflectionTypeLoadException)
+                {
+                    // TODO: Trace here 
+                }
+                catch (Exception)
+                {
+                    // TODO: Trace here
+                }
+            }
 
             return null;
         }