problem during ep installation

Hi and thanks all the sdn forums.

When i try to install ep 6.0 (j2ee 6.20) on windows 2000 server i get this error message:

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SAPinst is getting started.

Please be patient ...

guiengine: waiting for connect on port 21212

guiengine: login in process..

guiengine: client logged in

ERROR 2004-10-27 10:20:30 [kdxxctaco.cpp:742]

CKdbTableContainerImpl::buildUpKeydbFromXmlFile(iastring,PKdbNameSpaceManager,iXMLDocument&)

FKD-00049 XML - Parser error: error: value '' of type NMTOKENS must match the Nmtokens production [vc: name token] in line 29209, 50

ERROR 2004-10-27 10:20:30 [iaxxcsihlp.hpp:438]

main()

FCO-00034 An error occurred during the installation. Problem: caught an unexpected exception.

Exit status of child: 1

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Any suggestion?

Regards

Lorenzo