NTRunUBE.EXE on Server 2003 does not work

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I have to start a JDE-UBE from a Server with WIN2003-Server.

My command is:
NTRunUBE.exe User Password Environment R47002C V1004002

This works very well from a normal client PC, but it does
not work on a Server-2003

I always get the message:
NTRunUBE JDE Login Failure

In JDE.LOG I can find:
4968/2376 Wed Jun 28 18:39:45 2006 jdeksec.c868
SEC0000003 - Security Server returned eSecUnknownUser for user \BHKLScriptÌÀÿ for eSecValidate

4968/2376 Wed Jun 28 18:39:45 2006 jdb_ctl.c3030
JDB1100015 - Failed to complete Security check

Any solution ?