specjbb gets an unhandled exception using the server vm

specjbb fails with an unhandled exception per below. SPECjbb.props.2
specifies a 2-warehouse run, but it will fail with any prop file I've tried.

java -server -ms512m -mx512m spec.jbb.JBBmain -propfile SPECjbb.props.2

Checking JVM

1st bounds test: OK
Super: Class Super, public=34, protected=33, private=32
Sub: Class Super, public=804, protected=803, private=802
Super: prot=33, priv=32
Sub: prot=111, priv=105
Subclass test OK
1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 1597 2584 4181 6765
1 1 2 3 5 8 666 666 13 13 21 21
2nd bounds test: OK
testIf: OK
testArray: OK
testBitOps: OK
testFor: OK
testDiv: OK
testTableSwitch: OK
testLookupSwitch: OK
testHiddenField: OK
checkRemainders: long double OK
checkMathFcts: OK
Primes less than 50: 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47
testExc1(simple throw/catch): OK
testExc2(skip catch clauses): OK
testExc3(catch in inner): OK
testExc4(catch in outer): OK
testExc5(rethrow): OK
testExc6(throw accross call): OK
testExc7(throw accr. 2 calls): OK
loopExitContinueInExceptionHandler: OK
testStringHash: OK
testClone: OK
testObjectArray: OK
checkInstanceOf: OK
checkInterfaceInstanceOf: OK
testWaitNull: OK
testVarAndMethodNameClash: OK
testMisk: OK
testGC: OK
PepTest: OK

JVM Check OK
Constructing the company now Hang....on

Loading Warehouse 1...
Exception in thread "main" spec.jbb.infra.Collections.DupKeyException:
key=4510196697137156
at
spec.jbb.infra.Collections.longBTreeNode.PushDown(longBTreeNode.java:698)
at
spec.jbb.infra.Collections.longBTreeNode.Insert(longBTreeNode.java:754)
at
spec.jbb.infra.Collections.longStaticBTree.put(longStaticBTree.java:1359)
at spec.jbb.Company.loadCustomerTable(Company.java:1124)
at spec.jbb.Company.primeWithDummyData(Company.java:453)
at spec.jbb.JBBmain.increaseNumWarehouses(JBBmain.java:1213)
at spec.jbb.JBBmain.DOIT_validation(JBBmain.java:1200)
at spec.jbb.JBBmain.main(JBBmain.java:1276)