Problem(s) Encountered:

1. Before start of night, mcgraw stopped working and TCS GUI failed. MIS was not responding.
2. It turns out that the scheduler robot doesn't interact with mcgraw for sending commands to TCS, so the startup and operations worked fine! We ran whole night with a single filter 
3. The logs say that the telescope frequently stopped tracking by itself (without any command), producing many trailed images over the night. I suspect mcgraw TCS interface does something to regulate that?!
Would be good to have mcgraw and filter wheel back up for tonight.

Solution:

Configured a new McGraw and swapped it in (old one sent to OSU).  

Surprised to see that the scheduler interacts at a level independent of McGraw.