Am I Crazy.... I/O DAW issues with 4.1.0

I've had my connected and arranged aggregate device setup for a long while now..
Cortex w/ UAD Apollo (Mac High Seirra.....i know....)

I do the update, get ready to rec....nothing plays using the aggregate with the same things i've used a million times....Apollo+Cortex...(it's aligned correctly through the midi set up....)

Did the I/O channel layout change?

I reset back to UAD only and she works like a dream....

....am i on crazy pills?