CNC Mill error message (Can't do that (EMC_TASK_PLAN_RUN) in auto mode with the

Hello,
I just upgraded my cnc lathe dolphin license to run my new 3 axis CNC Mill. I was able to create the post and load the program on the linux computer but by the time I hit run the machine it didn't move and give the message (Can't do that (EMC_TASK_PLAN_RUN) in auto mode with the interpreter reading ...
Do anybody know what this message means and how can I fix the problem?

This might indicate that the run button has been pressed twice (a switch debouncing problem)

Alternatively, is it possible that there is an endless loop in the G-code and the preview interpreter was still previewing when you pressed the button? Does this happen even with the sample G-code file loaded?

I am sure i answered the same question a few days back, not sure if it is the same member asking, though.