There are limitations on the way you can specify the number of elements in an array. This error has the following cause and solution:
Dim MyArray(10 To -5) ' Descending order not permitted.
Dim MyArray(0 To 0) ' No elements in the array.
Check to be sure your syntax is correct. For example, the following range is valid:
Dim MyArray(-5 To 10)
For additional information, select the item in question and press F1 (in Windows) or HELP (on the Macintosh).