Installation error with Sneak Preview SAP NetWeaver Java Edi on WIN XP SP2

Hello,

during the installation, I got the following error:

<b>sapinst.log</b>

ERROR 2005-07-11 20:18:42
CJS-00030  Assertion failed: in 
function sapdb_db_create(db_nm, db_host, db_ver) {
    var dep_root = sapdb_inst_root(db_nm);
    var sdb_i = new sdbInstance();
    sdb_i.dbName = db_nm;
    sdb_i.dbHost = db_host;
    sdb_i.dbVer = db_ver[0] + "." + db_ver[1];
    sdb_i.ctlUser = sapdb_get_db_user("CONTROL", db_nm, db_host);
    sdb_i.ctlUserPasswd = sapdb_get_db_user_passwd("CONTROL", db_nm, db_host);
    var actorObj = new SdbExtActor();
    actorObj.setSdbInstance(sdb_i);
    actorObj.setDbmCmd("DB_CREATE");
    actorObj.setExecutable(sapdb_dbmcli_path());
    actorObj.setDbRoot(dep_root);
    var rv = actorObj.sessionExecute();
    ASSERT(arguments.callee, rv == "OK", " SDB: ERROR CREATING DATABASE INSTANCE! Check the XCMDOUT.LOG FILE");
    var creation_ok = false;
    var i_size = actorObj.outSize();
    for (var i = 0; i < i_size; i++) {
        var s_line = actorObj.getOutputLine(i);
        if (/OK/.test(s_line)) {
            creation_ok = true;
        }
    }
    ASSERT(arguments.callee, creation_ok, "SDB: ERROR WHILE DB INSTANCE CREATION! CHECK THE XCMDOUT.LOG FILE! ");
}
 SDB: ERROR CREATING DATABASE INSTANCE! Check the 
===========================================

XCMDOUT.LOG FILE

<b>XCMDOUT.LOG:</b>

Subprocess starts at 20050711201842

 Execute Command : c:sapdbprogramspgmdbmcli.exe  -R c:sapdbj2edb db_create J2E CONTROL,CONTROL
 Execute Session Command : exit

> Subprocess stops at 20050711201842

 ERR
 -24953,ERR_DBEXIST: database instance already exists

Please help!

Best regards

Raymond Michalek