FIX: You receive an "An exception occurred" error message when you use a .NET class in the Business Rule Composer (885448)

using System;
using System.Collections;
using System.IO;
using System.Xml;
using Microsoft.RuleEngine;
namespace MyNamespace
{
/// <summary>
/// Summary description for MyClass.
/// </summary>
[Serializable]
public class MyClass
	{
	public enum MyEnum
		{
		first,
		second
		};
	ArrayList myAL;

	public MyClass()
		{
		myAL = new ArrayList();
		}
	
	public int Add(string myString, MyEnum myEnum)
		{
		myAL.Add(myString);
		return 1;
		}

	public int Add(string myString)
		{
		myAL.Add(myString);
		return 1;
		} 
	}
.....
}

RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Microsoft BizTalk Server 2004. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Hotfix information

Prerequisites

No prerequisites are required.

Restart requirement

You do not have to restart your computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   17-Sep-2004  16:46  3.0.5343.0        708,608  Microsoft.ruleengine.dll