Hello everyone, we fixed a bug today that did not allow the game to start due to steam looking in the wrong directory. This has been fixed and you should be able to open the game no problem now.
Dark Matter update for February 6, 2019
Bug fix 2/6/2019
View all patches · Build 3538035 · Last edited March 15, 2019 – 17:19:44 UTC by 
Wendy
Patchnotes via 
Steam Community