I'm currently unable to get my game to make it to even the main menu. It brings up the seizure-inducing Bloom Effect Discovery Conquest screen with the capships, and then it minimizes the screen to taskbar before a "Discovery Freelancer has stopped working" error pops up, closing the game.
Tried re-installing several times to no avail. I know this is vague but nothing changed (to my knowledge) since my break regarding my Disco files, and this problem obviously didn't exist before then.
The problem can exist if you have installed another Freelancer mod before. It is usually solved by deleting C:\Users\<YOUR USERNAME>\Documents\My Games\Freelancer\Accts\SinglePlayer
That usually solves the issue for me.