voigt backward compatibility

I have tried using ISIS 1.4.8 and my saved models don't work.  (They give very
bad fits, whereas before they gave good fits.)  This is because the voigt()
model has changed, apparently.

This is a backward compatibility problem.  Is the old voigt model still around?

Another option is to convert my old models at run time.  What are the formulae
to convert between old and new voigt parameters?

Also, is there a way to tell what version of ISIS I'm running at run-time, so I
can do this automatically?

Also, when did voigt() change?  I recall that my models worked on 1.4.7, but I
may misremember.

Thanks,
Rob

----
You received this message because you are
subscribed to the isis-users list.
To unsubscribe, send a message to
isis-users-request_at_email.domain.hiddenwith the first line of the message as:
unsubscribe