what should I click to download it? alway further windows appearing for signing up or registering or other blabla...

about your impression: my pathfinder uses navmesh-like areas (consisting of various amount of tiles), where I do the high level pathfinding for groups, and short low level pathfindings are done on tile level for units. so in theory I could use a navmesh too, which would have benefits in case of e.g complex castles, if I can adapt its features to my needs, basically a very effective collision avoidance is a must, and (what seems to be more difficult) dealing with various unit sizes also should be solved. but if I can generate tiles from navmesh areas, the thing would work in the very same way as currently, except that my areas are processed by a terrain analysis to realize strategic positions, that should be reworked totally.