Poser's "out of memory" message is usually an indication that something else has gone wrong for which there is no error message. ;) You can't assign more memory under Windows anyway. Did you get any other error messages prior to that one? What were you doing at the time? As you've seen, by the time you get the message telling you to save your work, it's too late to save your work. It's a good habit to save before you do anything stressful, such as rendering, adding another figure, making a cup of coffee etc. :)