Since installing version 4 in the summer, everything has been working fine.  AT has been scheduling our single cart per hour syndicated shows absolutely fine after an initial teething problem where it was scheduling the wrong programme.  This was fixed as far as I remember by changing the global rule for the style to be a guide. 

It's all been fine until tonight.

Nothing's changed, but now it's gone back to scheduling incorrect programmes again.  Not only that what it is scheduling is date restricted or hour restricted to not schedule at all - i.e. all red in the restrictions window - yet it seems to be ignoring that and scheduling anyway. 

HAve I missed something obvious?  What could have happened to change this? 

I am somewhat mystified especially at the thought of it scheduling stuff which is totally red in the hour restrictions!

Thanks

Neil