Re: The problem probably wasn't the software...
it might be time to back all of that stuff up onto more modern media, as well as a RAID someplace with images that can be loaded (and run) by something *like* simvh
I've got a few simvh-compatible images for PDPs and I know the VAX images exist as well... so we can avoid the problems of ancient hardware [though it's still fun to play with it] and potential data loss.
NASA may be a little weak on the I.T. front...
post-edit (after reading a few more replies in this topic)
simvh would solve nearly all of the language and hardware format compatibility problems identified, from the FORTRASH lingo itself, to the non-IEEE floating point format