Predefined Err numbers in VB Script: Err.Number Err.Description 5 Invalid procedure call or argument 6 Overflow 7 Out of Memory 9 Subscript out of range 10 This array is fixed or temporarily locked 11 Division by zero 13 Type mismatch 14 Out of string space 17 Can't perform requested operation 28 Out of stack space 35 Sub or function not defined 48 Error in loading DLL 51 Internal error 91 Object variable not set 92 For loop not initialized 94 Invalid use of Null 424 Object required