Hi Andy, and all ! I was developing a little webapp under Zope. I was using the following setup: Linux 2.4.x Zope 2.3.0 MySQL 3.22.32 ZMySQLDA-2.0.6 MySQL-python-0.3.5 Everything went smooth that way. Small SQL queries and complex SQL queries, queries on empty tables and on full ones, they all went well. Now I exported the website and dumped the tables structure. I the impoerted the website and created the tables on a: Sun Solaris (don't ask me what release) - Sparc processor. Zope 2.3.0 MySQL 3.23.32 (or 3.23.33, I am not sure) ZMySQLDA-2.0.6 MySQL-python-0.3.5 And this happened: Querying MySQL like this: -- show tables; -- or -- select * from data; -- all went ok. But running this statement on *empty* tables (mark you, just no data) left no python process running, they all died: -- select a.a b.b c.c from a b c where a.fk_b = b.pk_b and a.fk_c = c.pk_c order by a.a; -- It looks to me there is an uncaught "NULL pointer exception" deep down somewhere in the code.... Anyone hints or solutions ? I am going to put some valid data into the database and try to run the queries again. I have not done this yet. - Thanks in advance, Holger -- ----------------------------------- catWorkX GmbH Dipl.-Ing. Holger Lehmann Stresemannstr. 364 22761 Hamburg Tel: +49 (0700) catWorkX Tel: +49 (40) 890 646-0 Fax: +49 (40) 890 646-66 mailto:lehmann@catworkx.de http://www.catworkx.de http://www.catbridge.de