You can download the former versions of MashZone from the ARIS Download Center.
Here's a direct link to MashZone 220.127.116.11:
http://aris.softwareag.com/ARISDownloadCenter?detail=Y&groupname=ARIS%20Mashzone&language=en#ARIS MashZone 18.104.22.168_y
Excellant! Thanks for the link, that's what I was looking for. Am downloading now and will see what happens.