Don't 100% recall if it was fine previously (as amount of new backgrounds from space age) but unable to launch the mod without disabling vanilla menu now

Yeah - I just installed this mod and I do not want that mod - I want MORE backgrounds, not replaced backgrounds.

The update actually does exactly what you guys want
Before, my mod forced the game to disabled all base game main menu simulations. Now, you can choose to only disable elevated rail sims, only space age, only base game, all three of them or just leave all simulations on!

The settings are in the main menu -> settings -> mod settings - startup -> Disable Vanilla Menu Simulations

ah! ty!

Sounds like a backwards way of doing this - why not let the dependency on "Disable Vanilla Menu Simulations" be itself optional and you just add your simulations to whatever is already there?

Sounds like a backwards way of doing this - why not let the dependency on "Disable Vanilla Menu Simulations" be itself optional and you just add your simulations to whatever is already there?

Done.