Problem with SQL-Datasource

Hello

i have a problem inserting SQL-Datasource within special object:

i configured Z MySQL Database Connection successfully
but when i add SQL-Datasource via ZMI always an error comes up:

Error Type: AttributeError
Error Value: Name

the object itself is inserted in the system

ZMS: ZMS 2.10.5-24 (Build #129f)
ZOPE: (Zope 2.10.4-final, python 2.4.4, linux2)
PYTHON: 2.4.4 (#7, Sep 5 2008, 14:29:18) [GCC 4.2.1 (SUSE Linux)]
ZMySQLDA-3.0
MySQL Version: 5.0.45

Traceback (innermost last):

       *  Module ZPublisher.Publish, line 119, in publish
     * Module ZPublisher.mapply, line 88, in mapply
     * Module ZPublisher.Publish, line 42, in call_object
     * Module App.special_dtml, line 65, in __call__
     * Module DocumentTemplate.DT_String, line 476, in __call__
     * Module DocumentTemplate.DT_Let, line 75, in render
     * Module DocumentTemplate.DT_Util, line 196, in eval
       __traceback_info__: getEntities
     * Module <string>, line 0, in ?
     * Module Products.zms.zmssqldb, line 380, in getEntities
     * Module Products.ZMySQLDA.DABase, line 130, in __getattr__


Does anybody has a tipp?

regards, Th. Weber