[GeoNetwork-users] HarvestManager - java.lang.NullPointerException

Hi.
We are trying to use geonetwork but we found this error:
(we are using a sql server database)
thanks for your help

2007-10-25 12:26:42,562 INFO [jeeves.apphand] - - Harvest manager...
2007-10-25 12:26:42,609 ERROR [jeeves.engine] - Raised exception while
starting appl handler. Skippe
d.
2007-10-25 12:26:42,609 ERROR [jeeves.engine] - Handler :
org.fao.geonet.Geonetwork
2007-10-25 12:26:42,609 ERROR [jeeves.engine] - Exception :
java.lang.NullPointerException
2007-10-25 12:26:42,609 ERROR [jeeves.engine] - Message : null
2007-10-25 12:26:42,609 ERROR [jeeves.engine] - Stack :
java.lang.NullPointerException
        at
org.fao.geonet.kernel.harvest.HarvestManager.<init>(HarvestManager.java:63)
        at org.fao.geonet.Geonetwork.start(Geonetwork.java:175)
        at jeeves.server.JeevesEngine.initAppHandler(JeevesEngine.java:409)
        at jeeves.server.JeevesEngine.init(JeevesEngine.java:140)
        at
jeeves.server.sources.http.JeevesServlet.init(JeevesServlet.java:65)
        at javax.servlet.GenericServlet.init(GenericServlet.java:168)
        at
org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:383)
        at
org.mortbay.jetty.servlet.ServletHolder.start(ServletHolder.java:243)
        at
org.mortbay.jetty.servlet.ServletHandler.initializeServlets(ServletHandler.java:446)
        at
org.mortbay.jetty.servlet.WebApplicationHandler.initializeServlets(WebApplicationHandler.
java:321)
        at
org.mortbay.jetty.servlet.WebApplicationContext.doStart(WebApplicationContext.java:511)
        at org.mortbay.util.Container.start(Container.java:72)
        at org.mortbay.http.HttpServer.doStart(HttpServer.java:753)
        at org.mortbay.util.Container.start(Container.java:72)
        at org.mortbay.jetty.Server.main(Server.java:439)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.mortbay.start.Main.invokeMain(Main.java:151)
        at org.mortbay.start.Main.start(Main.java:476)
        at org.mortbay.start.Main.main(Main.java:94)

2007-10-25 12:26:42,640 INFO [jeeves.engine] - Starting schedule manager...
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