My mod checks if you have mods["space-age"] enabled and loads the sprites.
The only possible reasons I see how it can fail to load (and it doesn't fail to load, since you are in game, otherwise the game would prevent loading) is -
1. You don't have Space Age mod active
2. You have some other mod that overwrites the filename property of the default turbo belt.
3. Somehow Space Age loads after my mod, fails the check and thinks it's not active.
The only thing i can do on my end is to move prototype modifications even later in initialization, to avoid 3.
But it's unlikely to be the issue, i think.
