<% On Error Resume Next %>The above line turns on VBScript error trapping. In doing so, whenever a line of script produces an error the processing continues on to the next line of the script.
<% If err.Number <> 0 Then Response.Write "Number = " & err.Number & "<p>" Response.Write "Description = " & err.Description & "<p>" Response.Write "Source = " & err.Source err.Clear %>
The above prints the error information.