Same problem here
Same thing hapend to me while trying to configure dovecot. It doesn't show any error when i start the service, it even writes [OK] when it's finished but when i query it's status it says dovecot dead but subsys locked. I tried deleting the subsys file but then it just registered the process as stopped and when i turned it back on, there was the same problem.
I will try updating or recompiling the applocation and hope it gets fixed by itself, but i'm not putting my hopes on this one.
So if anyone can offer any help, it would be greatly apreciated.