I just copied a controller and pasted it (using the builtin copy & paste functionality for blueprints). Then I clicked on the pasted controller to edit the code and the program crashed:

The mod MicroController (0.7.2) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event m-microcontroller::microcontroller-open (ID 200)
__m-microcontroller__/control.lua:376: attempt to index local 'state' (a nil value)
stack traceback:
    __m-microcontroller__/control.lua:376: in function 'microcontrollerGui'
    __m-microcontroller__/control.lua:33: in function <__m-microcontroller__/control.lua:25>

Thanks for this info, I'll fix it in 4 hours or later.

https://mods.factorio.com/mod/m-microcontroller/downloads

I published new update, please check it again. Unfortunately, I can't test it right now. (probably, new update doesn't fix the bug)

The mod MicroController (0.7.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event m-microcontroller::microcontroller-open (ID 200)
__m-microcontroller__/control.lua:376: attempt to index local 'state' (a nil value)
stack traceback:
    __m-microcontroller__/control.lua:376: in function 'microcontrollerGui'
    __m-microcontroller__/control.lua:33: in function <__m-microcontroller__/control.lua:25>

:)

I can't catch the bug...

Can I help you somehow?

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