System.InvalidOperationException: Unable to generate a temporary class (result=1)

Question

I have developed an application using .net 3.5 and have deployed it as an .exe on a number of machines with the same environment. However, on one particular machine I get th

Answer 1

It may be also just some simple error in the serialized class (typically a result of some copy/paste). For example the following class will cause this error:

  public class Foo
  {
      private string[] contexts;

      /// 
      [System.Xml.Serialization.XmlArrayItemAttribute("Context", 
       typeof(Property), IsNullable = false)]
      public string[] Contexts
      {
          get { return this.contexts; }
          set { this.contexts = value; }
      }
  }

Notice that typeof(Property) parameter in XmlArrayItem attribute is not compatible (most likely) with string causing similar exception:

System.InvalidOperationException: 
Unable to generate a temporary class (result=1).

If typeof(Property) is replaced with typeof(string) serialization will work again.