Auto Error Handler - Version 2.5.0 This product can save hours of time and frustration. VB 5.0 developers can use this product to add or remove error handlers to each and every sub, function or property in any type of code file in a project. The error handler displays a message box with the error number, description and module it occurred in. In addition, if you choose the line number option, it will display the line number the error occurred on as well. Use this product for testing or before you distribute your final product.