I guess I had the same phase of the moon as you calliloo because all of my Cherry Berry were lethals too. Somewhere, deep in my memory cell, I seem to recall this was common with these seeds but since I'm stubborn, I tried them anyway. "They" were correct.
I also had the same lethals with Eskimo Pie and Christmas Candy. Great germination for the few seeds they made, but they withered away in the two leaf stage.
In general, I had less germination this year than last and they were sooooooo much slower to germinate than last. They were all started the same way, the same medium, the same, the same, the same, etc. I still have 104 in various size pots with one more tray to get through. I really think that is enough to tend.

One of the seedlings that already has two eyes.
jay dee