WF Builder gives "Illegal node-id in Nodevalue-Table..."

[Michael Pokraka]

Greetings,
Yep, the subject says it all, and I suspect I may have posted about this =
one
before (6.20/4.7 system).
 
We get the above message when saving a while loop in the workflow builder=
 -
usually repeated three times in the same dialog box with a number next to
it.
Does anyone get this and/or have any light to shed on it?
 
I've logged this with OSS before, and the official answer was that this
would take too much time to get to the bottom of. The problem is that it
_sometimes_ causes a workflow corruption (50%?) but the corruption cannot=
 be
reliably reproduced and we should just ignore the message. They kindly
offered to connect in and fix any resulting corrupt workflows when it
happens... but honestly, who has time to log a call and wait for SAP to
respond to something logged on a DEV system when all you want/need is to =
get
a workflow built sometime in the next day or 2.
 
Anyway, rebuilding workflows can get rather frustrating so I thought I'd =
ask
here once more ... clutching at straws ... any info appreciated.
 
Cheers
Mike