If I remember that one correctly, it's the one that gives 1M credits, visible maps and quick building with 1-2-3 on the numpad? Fun for quickly building fleets when you're a roleplayer or want to re-ennact scenarios.
The trainer simply does this whenever fast-build is activated, probably addressing code that somehow is shared with those camera events in some mods. Another effect it causes is making the audio and screen flicker whenever it rains. To solve the black screen without visuals is to disable the fast-build mode with the numpad, then clicking the bottom for "next unit" while toggling the battlecam a few times. It should restore and focus on your units.
Try to turn off the fast-build feature before commencing the battle. Also be aware that whatever build advantage you gain, your enemy will also gain. Be prepared to run into a fleet of 3 executors, 20 star destroyers and a 100 escorts if the enemy AI has enough planets to support that population count!