Having said that MDI should still work and it does here once I chose Active Low for E-Stop, your xml had it active high, ie red cross in active low.
Just to clarify, you are just trying to test things out and dont have anything connected?
Hood

Set estop to active low green.  Still no response to MDI. command.  No cable connected to computer.  When .nc program is loaded I can click on start and green border appears around button.  Goes away if I click stop.  No change in X,Y,Z values.  I noticed CV mode is bordered with green, what does that mean? 

I dont know what your problem is then as it is working fine here. I have E-Stop set to active low and I can then press Reset and it turns green. I can then go to MDI and command a move. If I turn on the Jog On/Off button so green is round it then I can jog via keyboard. If I load code and press start it works fine as well.
 CV means constant Velocity which is what you would normally be running anyway so its not a problem.
Hood

Thanks.  I will remove the installation and shut down, then reload it and see if anything changes.

Hood,  New clean installation seems to work.  I don't know what I managed to do wrong the first time.  Thanks for all your suggestions.

Glad to hear
Hood