>A customer gets the message:
>"Array dimensions are invalid"
>Error 230
>
>I can't seem to trigger this message myself.
>
>In what cases will this error occur???
>
>I only can get "invalid subscript reference" messages.

You must have more than 0 and less than 65,000 elements in an array. This error message will happen if you violate this range. Elements being either rows or columns.