Mal, I tried it myself and have found a couple of problem
The windows link in http://trac.osgeo.org/mapguide/wiki/maestro/UserGuides/UpdatingFDOInstallati on actually provides you with 3.3.1 versions of the FDO's ... for mapguide 2.6 you need version 3.8.x FDO's As per Crispin's response why do you need to change from the default FDO? If you really need to replace the dll's (not recommended) please forget the steps in the above link and do the following; 1) download the windows 64bit SDK from http://fdo.osgeo.org/content/fdo-380-downloads 2) extract the files in the zip to c:\temp 2) stop the MapGuide service 3) take a back up of your current FDO folder 4) delete all files and folders within the existing FDO folder 5) copy all files and folders from c:\temp\fdosdk-win64-3.8.0_3601\bin\ to the fdo folder in you mapguide install 6) restart MapGuide And that should work (worked for me on a server 2008 install). Mark _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users