the Weemapcache doesn't read a certain cell type, which eventually break your map cell/object/feature. use the original map-cache.exe that provided in the server.   https://github.com/rathena/rathena/blob/master/doc/map_cache.txt https://github.com/rathena/rathena/blob/master/conf/grf-files.txt Spend the times and read it.