XMI-Generation

Hello,

i was trying to get a UML-Diagram from a existing Database. 
Therefore i modified the ant file for the MiddlegenIDE in a way that i set 
the lib variable to the path my Middlegen-jars are, set the gui-varable to 
false, deleted the gen-java part and replaced the cmp20 part with the 
following stuff :

              <xmi 
                fileprefix="formas" 
                package="formas" 
                format="poseidon" 
                destination="." 
          >
          </xmi>

everytime i start Middlegen now, i get


[middlegen] log4j:WARN No appenders could be found for logger 
(middlegen.Middle
en).
[middlegen] log4j:WARN Please initialize the log4j system properly.
[middlegen] Database URL:jdbc:postgresql://10.100.0.125:5432/formas
[middlegen] No <table> elements specified. Reading all tables. This might 
take
 while...
[middlegen] java.lang.ClassNotFoundException: 
middlegen.DontCloseLog4JLogSystem


Thanks for your help

J