Sorry, I little bit confused....
I start my CSE-simulation for my test model - and I see empty for nc-prog, see image. "Single Block" or "Continious Play" - not so important...
In Past I see a same, fixed it, but - forget what I fix.....
what is the current NX-Version that you are using?
Sorry again! I use NX10.0.3.5 latest mp, and after re-start NX problem disappear. Thanks!