I made a race level, but when I try to run it I always get the message: 'Amnesia error: out of memory'. It works in single player, but not in race mode. How can I fix this?

You've made too much events. In singleplayer, if an event is close enough to the player, it's called to run, but when you leave far enough, it's turned off again. This saves memory. But in multiplayer, all events work at the same time. If you made too much of them - the JJ2 cache memory is full and the game crashes.

Originally Posted by JSZ Jazz

You've made too much events.

Either that or level is too big. Both ways fill cache memory.