Unknown namespace prefix nt

[Felix Röthenbacher]

Hi
when I try to access the repository from within Jetty
javax.jcr.NamespaceException: Unknown namespace prefix nt.
exception is thrown. If I access the repository from a
standalone application it works fine. I didn't find
out what the difference between the two types of
running jackrabbit is exactly. It seems that the
NamespaceResolver object is not initialized with the
predefined namespaces. Maybe someone can give me a hint.
Thanks
Felix
Stacktrace below:
Caused by: javax.jcr.NamespaceException: Unknown namespace prefix nt.
        at 
org.apache.jackrabbit.core.nodetype.xml.AdditionalNamespaceResolver.getURI(AdditionalNamespaceResolver.java:92)
        at org.apache.jackrabbit.core.QName.fromJCRName(QName.java:112)
        ... 53 more
javax.jcr.NamespaceException: Unknown namespace prefix nt.
        at 
org.apache.jackrabbit.core.nodetype.xml.AdditionalNamespaceResolver.getURI(AdditionalNamespaceResolver.java:92)
        at org.apache.jackrabbit.core.QName.fromJCRName(QName.java:112)
        at 
org.apache.jackrabbit.core.nodetype.xml.CommonFormat.fromJCRName(CommonFormat.java:92)
        at 
org.apache.jackrabbit.core.nodetype.xml.CommonFormat.getName(CommonFormat.java:292)
        at 
org.apache.jackrabbit.core.nodetype.xml.NodeTypeFormat.readName(NodeTypeFormat.java:109)
        at 
org.apache.jackrabbit.core.nodetype.xml.NodeTypeFormat.read(NodeTypeFormat.java:80)
        at 
org.apache.jackrabbit.core.nodetype.xml.NodeTypeFormatter.read(NodeTypeFormatter.java:121)
        at 
org.apache.jackrabbit.core.nodetype.NodeTypeDefStore.load(NodeTypeDefStore.java:60)
        at 
org.apache.jackrabbit.core.nodetype.NodeTypeRegistry.<init>(NodeTypeRegistry.java:166)
        at 
org.apache.jackrabbit.core.nodetype.NodeTypeRegistry.create(NodeTypeRegistry.java:120)
        at 
org.apache.jackrabbit.core.RepositoryImpl.<init>(RepositoryImpl.java:269)
        at 
org.apache.jackrabbit.core.RepositoryImpl.create(RepositoryImpl.java:308)
        at 
org.apache.jackrabbit.core.jndi.BindableRepository.init(BindableRepository.java:79)
        at 
org.apache.jackrabbit.core.jndi.BindableRepository.create(BindableRepository.java:73)
        at 
org.apache.jackrabbit.core.jndi.RegistryHelper.registerRepository(RegistryHelper.java:50)
....