Joins had some work done in 2.4 to improve performance. What FDO provider is being used on the left side of your join? - Jackie -- View this message in context: http://osgeo-org.1560.n6.nabble.com/MG-2-4-b1-join-error-tp4984823p4984841.html Sent from the MapGuide Users mailing list archive at Nabble.com.