Help Immediately - java.util.zip.ZipException

We are migrating EP6 SP2 P5 to NW04 on Unix HP-UX 11.11.

We immediately launched the KMC migration and it comes up and the hour glasses endlessly.

We are migration the customers Production system and need some ideas of what might be wrong ASAP.

Thanks - Here are the lines of the log files:

1123871674779#INFO.- Reports button clicked at MainMigrationFrame

1123871674781#INFO.- SAP System Name is

1123871674781#INFO.- using tool version 6.90.20050627170305.0000/2693

1123871674781#INFO.- using system installation at /usr/sap

1123871674785#INFO.- Processing migration info

1123871674820#INFO.- java.util.zip.ZipException: oversubscribed dynamic bit lengths tree