First off, thanks for adding the feature to allow you to turn off the "Hinter." Alas, I too experienced an immediate crash when updating the mod. The crash I experienced is slightly different from that above, enough so that I'm also reporting it.
I added a note to your GitHub regarding this change (Pull Request #11), and attached the log file and a save game that will crash with this error within 5s or so. I hope this is helpful. The relevant part of the log is as follows:
233.482 Error MainLoop.cpp:1207: Exception at tick 67944164: The mod Logistic Request Hinter (1.2.0) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event LogisticRequestHinter::on_tick (ID 0)
LogisticRequestHinter/control.lua:149: attempt to index field 'vars' (a nil value)
I hope the save file will help you identify & fix this issue quickly. Sorry that my request is causing you yet more work.
Thanks again,
P^2