Help, Map editors..

[Sir Shutter]

hey guys, i have a problem when I open my map with rme 8.40 map editor it works then i edit the map, then I open it with simones it tells me "Unknown attribute code : 1231244etc. numbers like that , but it opens the map then i start putting in monsters and npcs , i save the map , then i open by rme >for auto borders to map< then when i open simones all the monsters and npcs i added dissappears and tells me that unknown attribute code.. how do i fix that? i cant put npcs or spawns on the map

please help I give REP++!!

 

[klekSu]

Lol, use just one map editor. It's simply ;s