Theoretically speaking, any version will do. The HTTP API exposed by the mapagent (that Maestro communicates with) has been near-stable since 1.0. - Jackie -- View this message in context: http://osgeo-org.1560.x6.nabble.com/MGOS-V2-1-and-Maestro-tp5045479p5045497.html Sent from the MapGuide Users mailing list archive at Nabble.com.