Hi, Thanks for the suggestions.
I confirm I have validated the install, files were already correct. I also did a total reinstall.
Disabling the steam overlay has no effect. However, the steam overlay does not work even when enabled. In particular, the steam launcher only brings up the CMANO launcher, not the game itself.
So finally, directwrite had no effect, apart from making steam uglier.
It could be my video drivers, they are totally up to date, but as I said, before the steam version i didn't have this problem. Maybe its not steam, maybe a drivers update borked it, and was coincidentally at same time.
I'll try rolling back this weekend, and i'll try re-installing the non steam version as well.
Glad to hear I am not the only person with this issue, since it means its not totally me, but sorry that you have same problem Asterix.