PT 10.3.10 a new problem

[graveleye]

Got 10.3.10 up and running, almost.
Now I can't hear my tracks when record enabled. I can hear them fine until I hit play, then it goes away.

I have to be able to practice my parts along with the existing tracks, but what's the use if you can't hear them? This was not a problem last week when I still had 10.3.2. I've tried anything I can think of at this point.

I have LLM switched off and buffer set 64. I haven't had this problem since I can remember. Everything appears to be set up the same way it was before.

Is this a new feature that you can't play along with your tracks anymore? Only hear them if it is actually recording? If so that's bull squat.
Any ideas?