Problem with macro in MDI mode

Hello,

I'm trying to implement a macro for setting the tool length with a probe on the table. The subroutine i wrote is working and does what i want it to. Now I want to embed it as a macro in Gmoccapy so I have fast access to it in the MDI tab.

I followed the steps listed in the documentation and added a macros folder in my config directory. I added my .ngc file here. The ngc file itself has the blocks at the start and end
O<my_routine> sub

O<my_routine> endsub
M2

I added the necessary lines in the ini file as well.

Now when I press the macro button at the bottom left in the MDI tab (the button has the correct subroutine name on it) I just get the error "file not open" and my subroutine does not execute.
When I open the subroutine file in the Automatic tab, then go back to MDI I can run the macro no problem, but as soon as I load another program the subroutine button does not work.

I hope someone can help me as I'm pretty sure it's just some oversight on my part.

Maybe it helps if you post your macro file.

Post your INI file, better whole configuration.

Is your macros in INI file defined by manual?
linuxcnc.org/docs/stable/html/gui/gmoccapy.html#gmoccapy:macros