JRE from IBM and NBMDR

Hi,
have anybody some experience about running NBMDR with JRE from 
IBM(Java1.3.1).
When i boot MDR and It read fake MOF definition it give:

java.lang.NullPointerException
    at 
org.netbeans.mdr.persistence.btreeimpl.btreeindex.BtreeListByKey.size(BtreeListByKey.java(Compiled 
Code))
    at 
org.netbeans.mdr.persistence.btreeimpl.btreeindex.BtreeListByKey.size(BtreeListByKey.java(Compiled 
Code))
    at 
org.netbeans.mdr.persistence.btreeimpl.btreeindex.BtreeListByKey.size(BtreeListByKey.java(Compiled 
Code))
    at 
org.netbeans.mdr.storagemodel.IndexImmutSet.size(IndexImmutSet.java:78)
    at 
org.netbeans.mdr.storagemodel.AssocEndIndexSet.add(AssocEndIndexSet.java:143)
    at 
org.netbeans.mdr.storagemodel.StorableAssociation.addLink(StorableAssociation.java:373)
    at 
org.netbeans.mdr.storagemodel.BootReader.createInstances(BootReader.java:440)
    at 
org.netbeans.mdr.storagemodel.BootReader.createInstances(BootReader.java:482)
    at 
org.netbeans.mdr.storagemodel.BootReader.createInstances(BootReader.java:161)
    at org.netbeans.mdr.storagemodel.BootReader.read(BootReader.java:130)
    at 
org.netbeans.mdr.NBMDRepositoryImpl.createBootMOF(NBMDRepositoryImpl.java:1089)
    at 
org.netbeans.mdr.NBMDRepositoryImpl.installFakeMof(NBMDRepositoryImpl.java:1040)
    at 
org.netbeans.mdr.NBMDRepositoryImpl.boot(NBMDRepositoryImpl.java:1023)
    at 
org.netbeans.mdr.NBMDRepositoryImpl.initCheck(NBMDRepositoryImpl.java:481)
    at 
org.netbeans.mdr.NBMDRepositoryImpl.getExtentNames(NBMDRepositoryImpl.java:250)
    at 
com.disnetsoft.metadata.core.MDExtPointManager.setUp(MDExtPointManager.java:199)


Thanks