Use latest stable, the pre-release is buggy This fixed the problem, the program starts. But there are other problems. Whatever I do, any running version (17 or 18 / Steam or not) always watches mods in the folder C:\Users\user\AppData\Roaming\Factorio The game does not pay attention to the mods in ...
Can't reproduce with the minimal info given. At first glance it looks like maybe you are passing bad data to the DSB API - if there's a bug here it's that it's not checking the sanity of the input. But unless you tell us how to reproduce this situation exactly, it will be hard to find out. It wasn'...