League Cancelled due to inactivity

Just received a mail with subject: League Cancelled due to inactivity.
Anyone else received this mail? Our league has 6 people in it an it's active. With active I mean ... I think no one ever missed a race? Got this mail just before the start but we just ran our race, so I don't know if this might be a bug or not.

Tim 

Are you sure it's about your current league? By the looks of it, it's still active and you're still in it.

That's why I thought it might be a bug.
Here's copy/paste of the email. Maybe this helps?
iGP Manager <noreply@igpmanager.com>20:00 (12 hours ago)to my nameYour league 'Fumble Cup' has been automatically closed due to inactivity.View this Mail on iGP Manager 


edit: the hour is actually the starting time of the race.

Yeah,
I got one of these.  The league is very active.
Happened yesterday as the race was about to start

I got one too, but my league was actually inactive and to be fare, I don't mind that.  I'll have a look.

Got one too. Just before yesterday's race. We're active with 15 managers.