Re: A modder's guide to errors
I think you're refering to the issue with floods in a region. If a region experiences a flood, movement, fort building, watchtower buiding are affected in that region for the rest of the campaign.
This came up as a bug report in RS1.5b, a user reported not being able to build a fort, but after adding the region to descr_mercenaries and re-generating map.rwm they were able to build a fort again.
Under the patronage of Roman_Man#3, Patron of Ishan
Click for my tools and tutorials
"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe." -----Albert Einstein