Hi Phil,
trying to start win16 session (window crashes no error msg)
(full screen C:\ loading please wait
after a few moments reverts back to ecs desk top)
Funny you should mention that, it's happening to me out of the blu with my accounting package, the hardware has not changed on that PC.
I've also noted that when I changed the memory settings for the Win16 session, it doesn't save them either but simply puts them back to the system defaults, so it might not be the same problem as yours. Next time I'm in front of that PC I'll try Andy's hint, I might have to dig deeper re the session/property settings not being saved I suspect.