FSX AFCAD converter wont work!

[Ghostrider114]

I followed the instructions to convert an AFCAD to FSX format but when it came up with an error message every time I tried to convert it from XML back to BGL.  HELP

Edit: It turns out that it just doesn't like theafcad I am trying to convert, if anyone can help, I am trying to convert the Abacus Vietnam Carrier Ops CV-64