This is the error I get when I try to start the game. If I try to start through WFTO.exe sometimes it stays forever, or otherwise it happens the same that if I try to do it through WFTOGame.exe. For the latter, at the mid point of loading, it exits and go to the splashscreen forever too. So I can't even get to the main menu in any case.
Everything worked fine(-ish, there were some errors with the display of the main and in-game menus that I could live with) before. I recently partitioned the HDD to install another OS, but without touching to the part where Steam and WFTO are.
I hope you can help!
EDIT: I guess this could help as well. Launcher log
Customer support service by UserEcho