Crystal Expert System 2.10 at Vetusware.
is this the same application?
out of curiosity I downloaded it and the main exe runs on my vmware however tbere is no pcx.exe file anywhere so it is definitely different variables at play
very strange it still won't run on 618 if you had a pretty average 8mb 386/486 machine with a average dos install back in the days I doubt it would be running more then 620+ kb free conventional memory unless you really sat down and squeezed it out of the system which you never mentioned doing.
There may be some other detail you don't remembr, try to remember as much about the original system specs you had running cpu, dos version, any custom modifications to the system.
I am really now just pursuing this out of curiosity because I don't think can contribute more system wise.
so its the pcx.exe file that is out of memory and the main crystal program runs ok?