>Sorry, I'm still new at trying to describe things in VFP. The .VCX file contains custom classes and some forms, containers, etc. The .vct error I get occurs when this .VCX file is accessed in the rebuild all attempt.

Sounds to me like you have some corruption going on. Do this:

*--------------------------------------------
*-- Open the vcx as a table
*--------------------------------------------
sele 0
use myvcx.vcx excl 

*--------------------------------------------
*-- Attempt to pack the libray if opened
*--------------------------------------------
If used("myvcx")
     pack
     reindex
Endif

use in myvcx