[SOLVED] Error monitoring Host (2): Error executing probes

Hello,

I read that disable/enable does nothing to running vm, so I did it.
Host keeps in err state.
onehost show can see what vm’s has running, but no more information about why this error :
ERROR="Thu May 21 11:27:44 2015 : Error monitoring Host puigmal.lacuinadel.cat (2): Error executing probes"
Acces to datastores seems OK.
How can I manually execute the probes?

Thanks,