@kwilliams In addition I suggest to copy your complete gta folder (after a fresh, patched reinstall) on a second drive, to have a ressource for original gamefiles.

@21davy21 I know it was working fine before with Redux and carpack, but did you tried it without Redux and the addon car pack?

@Deathmatic
Just for note: My game crashes too after closing it. But i ignored it.
It could be that this problem has nothing to do with your current one (the ingame crashes and flickering).

@PsiBurner Yes, already saw this thread and the video. I guess if that happen a martial arts mod will definitely come. Alone the ingame animations now became a nice looking in some mods.

@chonkie i remembered a similar problem with addonpeds after the patch. The menu don't opened and i just forgot the native ui. The only needs for simple trainer are scripthookv.dll, dinput8.dll, trainerv.asi and trainerv.ini in the main folder.

@lilreeese I guess you forgot to install the native ui. That is needed for the menu.
https://github.com/Guad/NativeUI/releases/

Ok looks like that it's not needed for simple trainer. But i would give it a try.
Is only the menu key not working, but you have access to all other trainer options?

What i was longer thinking about:

There are many zombie stuff and mods. But i couldn't find one where you are playing as zombie. That means you need to find humans to survive and loading up your special skills. Victims with weapons or in zombie bases gives more energy.

Like a mix between Human Needs, The Purge and Zombie Mod.
Maybe there is already such mod somewhere.

Also would be nice to have zombie animations like biting and eating brains.

@lilreeese Do you have a gameconfig and dlclist installed? Because the update could overwrite files in the update.rpf.
If you mean the menu for the simple trainer that opens with "F3" on default.

@neogeo39 Can it be that only one car of this pack causing the bug? I mean without the pack it is working fine, right?

@thebegin10 Someone wrote in the comments from the first link that it gives problems. The other link was optional and just to share. Personally i would choose the first model.

I know it's a work, was watching a friend creating 3d objects for a website and i couldn't do that. Needs a good eye and knowledge to put everything together.