Way to avoid GEM crash with errors?

[pricky8]

How can those items be removed?

Also for me, I am making a map of an amphibious assault and the thing crashes frequently. Infact I ahve not managed to work more than 30 minutes on AS or MoW editor without a crash. Why is it so unstable? I am not a computer person I have had to watch a lot of tutorials to make the missions I have.

At this point so much time is wasted just opening and reopening the editor, map and mission that I give up till the make a more stable product or I find some guidance on how to fix the problem myself. I am of the habit of saving after every little change so i rarely lose anything, control+s is pressed every fourth key stroke probably. But the load up time, loss of continuity are very distressing.