Hi-
Sorry we hadn't been able to answer this one sooner.
I'm not particularly familiar with the setup you're describing, but
perhaps the most straightforward way to approach this issue is
if you could send us a very simple scene file with the "final gather only"
flag turned on, that can reproduce the problem.
So, would you mind emailing us, at "support <at> pipelinefx.com",
with a description of the problem? That will open a private support case.
Please be detailed as possible of the symtom, how to reproduce, etc., and
include your platform info as well.
We'll then give you directions on how to upload the sample scene file
onto our ftp site, and we can take it from there.
Thanks!