>I'll download a fresh R32 copy and try again, but does anybody have advice on ways to process these files reliably? The Set Step on I see is in this section of code:
>
> *-* Get the defined relationship files for this workbook; process each file
>
>when the type is customXML that is not caught by the Type CASE statement that proceeds to an OTHERWISE set step on.

This looks like a case for you, Watson... set step on and see what's going on, and write the code which is missing there. The rest already works, right?