Answers to your questions
Version 8.1C 
I have tried the icon, I’ve tried to access from Inventory program, I’ve tried to access from Start Menu, All Programs, Adagio, none are working.
I do get the sign on screen but when I click on Open, I get the message.  The Data Path and Ext seem to be ok, they are the same as the other programs which I can access.  Data Path:  F:\SOFTRAK\DATA\GID  Ext:  PAR