JobServer v5.2.1 on Windows 2012 JDK7 does not start cleanly

[Anonymous]

i am trying to setup a JobServer on a Windows 2012 (x64) with JDK/jre 7, but it keeps giving errors related to SIGAR.
i believe this is the reason for not getting statistics from this server.
any suggestion on how this can be resolved?
thanks,

PS C:\tools\edm\TJobServer\conf> .\jsl_static64.exe -debug
Env Entry: cmdline =
Env Entry: jrepath =
Env Entry: jvmtype = server
Env Entry: dependencies =
Env Entry: starttype = auto
Env Entry: account =
Env Entry: password =
Env Entry: loadordergroup =
Env Entry: wrkdir =
Env Entry: appname = TalendJobServer
Env Entry: servicename = TalendJobServer
Env Entry: displayname = Talend JobServer
Env Entry: servicedescription = Talend JobServer
Env Entry: stdout =
Env Entry: stderr =
Env Entry: stdoutappend = no
Env Entry: stderrappend = no
Env Entry: systemout =
Env Entry: systemerr =
Env Entry: systemoutapp

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[Anonymous]

it seems that it is necessary to load the class that is not listed by default.
so i have added the following to my jsl_static64.ini

params = 6
param00 = -cp
param01 = C:/tools/edm/TJobServer;C:/tools/edm/TJobServer/lib/jmxremote_optional.jar;C:/tools/edm/TJobServer/lib/log4j-1.2.15.jar;C:/tools/edm/TJobServer/lib/commons-io-1.3.2.jar;C:/tools/edm/TJobServer/lib/jsl.jar;C:/tools/edm/TJobServer/sigar-bin/lib/sigar.jar
param02 = -Djava.library.path=C:/tools/edm/TJobServer/jsysmon-20061229/native/windows/
param03 = -Dcom.sun.management.jmxremote
param04 = -Dtalend_props=C:/tools/edm/TJobServer/conf/TalendJobServer.properties
param05 = org.talend.remote.jobserver.service.WindowsJobServer

the key is the extra:
%JOBSERVER_ROOT%/sigar-bin/lib/sigar.jar
THANKS,