LUA error when opening sandbox and more?
Opening the sandbox:

Selecting a car model/platform:

Trying to save a new platform:

Hitting 'retry' often does nothing to solve the problem and this is preventing me from saving new designs. I've tried uninstalling the game (but not the launcher) twice and running the cleaner twice with the same results. I will attach my logs, as well. if anyone can help, this would be appreciated.