Hi Al,
Maybe I'am not fully understand your problem but I had also had some issues with MenuExist.
I wanted to know if a menu exists.
To check if a menu exists you have to add '.Menu' in the first parameter..
IF MenuExist("MainWIN
._Menu",lds_Menu.MenuItem) THEN
{"MainWIN."+lds_Menu.MenuItemindControl}..Visible=lds_Menu.ShowMenuOption
END