Usage Detector mode caused an unrecoverable error.
Please report this error to the moderator.

Error while running event usage-detector::on_tick (ID 0)
usage-detector/usage_detector.lua:91: attempt to index field '?' (a nil value)
stack traceback:
usage-detector/usage_detector.lua:91: in function 'check_progress'
usage-detector/usage_detector.lua:104: in function 'onTick'
usage-detector/gui.lua:69: in function <usage-detector/gui.lua:63>

Hi, thanks for your bug report!

I need some more information: Are you able to consistently reproduce this error? I have unfortunately not been able to reproduce it.

I will send you the save file in question. Just write your email. When you receive the e - mail, I will reply immediately.

You can send it to me at ".....(removed)...."

I sent an email. Check it out.

Issue fixed so that it no longer crashes, but unfortunately I fixed it by stopping the scanning more or less, so you have to open the GUI, stop it and start it again and it will scan the usage.

Nice savegame by the way.