You need a 64-bit libpq.dll. If you have a 32-bit postgres installation, this won't do. - Jackie -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/FDO-PostgreSQL-PostGIS-provider-on-64bit-tp6835440p6835624.html Sent from the MapGuide Users mailing list archive at Nabble.com.