Client backup was not attempted because backup window closed.

I'm getting multiple 196 errors at 11:59:59 even though the Start Window is set for 5:30pm - 5:00am the following day.

We're using 7.6.0.4 Master, Media, and all clients. Last night, it was both VMs and a few physical Unix boxes. Schedules are Frequency Based.

I've read a few tech notes that stated this problem was resolved in previous versions. I'd appreciate a pointer to a solution.