AFAIK there are no emulators which currently support SCI1, so you'll have to do your best getting the old interpreter to work.
If you're able to give some more specific details of any error messages, that would be helpful.
Mokalus of Borg
PS - And perhaps your computer and OS specs, too.
PPS - You could wait for FreeSCI to support SCI1, but it could be a while.