Some notes here:
9.1e is truly ancient. But still Progress has a history of supporting older versions a long time. It's actually set to be "retired" October 2015.
So if you have an active license you shouldn't hesitate to contact support.
There's also the knowledgebase to search. I found this that might be something similar. First of all you should think of all things that have changed since the system worked (file system layouts, installation of software like antivirus and firewalls, operating system upgrades, security changes etc etc).
Knowledge base home: http://knowledgebase.progress.com/.
I never use the internal search, I always Google with:
site:knowledgebase.progress.com