I'm trying to compile MonetDB on OS X 10.4.8 on a MacBook Pro. When I tried it from the source tarball, I got the problem with the JDBC interface that Shahbaz had. I downloaded the new install script that Fabian recommended and tried to install the current stable release. Now I'm getting the following error: /export/scratch0/monet/monet.GNU.64.64.d.6974/pathfinder/runtime/pathfinder.mx: In function 'xquery_client_engine': /export/scratch0/monet/monet.GNU.64.64.d.6974/pathfinder/runtime/pathfinder.mx:5102: error: 'struct CLIENT' has no member named 'blocked' /export/scratch0/monet/monet.GNU.64.64.d.6974/pathfinder/runtime/pathfinder.mx:5149: error: 'struct CLIENT' has no member named 'blocked' make[4]: *** [lib_pathfinder_la-pathfinder.lo] Error 1 make[4]: *** Waiting for unfinished jobs.... make[3]: *** [all-recursive] Error 1 make[2]: *** [all] Error 2 make[1]: *** [all-recursive] Error 1 make: *** [all] Error 2 making MonetDB4-XQuery failed Here is the process I used to compile the software: sudo ./monetdb-install.sh --prefix=/opt/monetdb --enable-sql --enable-xquery --nightly=stable -j2 ./monetdb-install.sh --version monetdb-install.sh 1.7 2007/02/16 09:12:17 fabian I have the latest install script as mentioned in a previous post. I know there is limited support for OS X so I'm trying to work out what the problem is. I'll keep the list updated on my progress. This is a great piece of software and I'm interested in using it for some professional projects that I am working on. Thanks, Dean