I just tried starting up the game again after a power cut, and got these error messages:
Specifically, if I try using the engine designer at all by itself (without creating a car first), the entire game becomes unplayable! I tried clearing my cache, to no avail - what should I do to fix this? Should I just clear my saves (which removes everything I had built so far - at least I backed it up beforehand) or verify integrity of game files?
Edit: I tried the latter, and it had no effect - it must be a database error. Is there any way this can be fixed without clearing saves or even reinstalling the game from scratch? On the other hand, immediately creating a new car, then creating a new engine from the ground up (not using an existing variant or cloning a variant) works just fine.