Use IOException instead of FileLoadException to handle #269 where an …

…FileNotFoundExeption is thrown. (#270)

Co-authored-by: Jarle Hjortland <jarle@webmed.no>

src/Hyperion/Extensions/TypeEx.cs

@@ -210,7 +210,7 @@ public static Type LoadTypeByName(string name, bool disallowUnsafeTypes)
                         "Unsafe Type Deserialization Detected!", name);
                 return type;
             }
-            catch (FileLoadException)
+            catch (IOException)
             {
                 var typename = ToQualifiedAssemblyName(name, ignoreAssemblyVersion: true);
                 var type =  Type.GetType(typename, true);