@8472:

When looking at the log right after you encountered the prob, search upwards from the end of the log and look for a line like

Map:fighter_crash Offset:(0, 0, 0)

@Mattn:

At least it's not a prob with the pathfinding *code*

This prob can be solved in two ways:

a) increasing #define PATHFINDING_MIN_STEPUP from 2 to 3 let's me happily walk both stairways.

(That's the max height delta between two stairs).

Maybe that's a topic for our mailinglist ?

b) map editing

The first step of the stairway to the upper house is too high. Adding one more stair at the bottom should solve it.

Not sure about the stairway to the roof. 8 stairs for one level *should* be ok. Might be a rounding problem (stairs should be at 8,16,24,...) or an unlucky misalignment with MicroTrace().