Command & Conquer 3 - Retail Trainer

[Caboose O'Malley]

Hmm, well I guess that you did this; started the trainer, started the game, pressed the options.... what went wrong? Is the error a cnc3game.dat error? if so then it's the famous memory leak issue that the game has. To fix it, either close all other programs that you are running in the background, update your drivers, or turn some of the ingame settings down a notch or two (i.e. resolution, shader detail) or buy more RAM... Or do all of them, I suggest that you start off by first checking if there's any newer drivers, then close all other programs in the background, then if those fail, turn a few details lower to see if it got any better...
Hope that helps...
From what I've heard so far, EA don't know how to fix the Memory Leak issue...