I did some testing and it does seem to be related to the Find command, perhaps it's counting some sort of points along the find cord/route and if it goes over a certain amount, you get the "Mysterious forces prevent you..." message:
https://postimg.cc/8skKHxCX
This might be a debugging message, and I'm only seeing it because for some reason I haven't been able to turn off GM mode permanently. It turns off on command, but the next time I log it it's back on. I won't lose sleep over it, things seem to be working 100% otherwise, except for my lack of ability to zone into Rivervale or Sanctuary Hills from PoK (I can get to Rivervale from Kithicor).
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