Hi,
when trying to deconstruct some tracks with a locomotive on it i got the following error:

The mod How Far Has it Been? caused a non-recoverable error.
Please report this error to the mod author.

Error while running event howfardiditgo::on_nth_tick(30)
LuaTrain API call when LuaTrain was invalid.
stack traceback:
howfardiditgo/control.lua:68: in function <howfardiditgo/control.lua:65>
stack traceback:
[C]: in function 'index'
__howfardiditgo/control.lua:68: in function <howfardiditgo/control.lua:65>

And thank you for the nice mod.

I have an idea what's causing this but not sure when I will implement a fix for it. I'd suggest temporarily disabling the mod when using instant deconstruct tools in creative mode, then turning it back on when you're done. Or, just remove the train by any other method than the instant deconstruct. This will workaround the issue until it's fixed properly.

sure, not triggering the crash is easy. Just wanted to report it.