That Oper must be set as services admin or possibly root, I think this should solve your problem
To check if he is in the services admin list :
/MSG OperServ ADMIN LIST
And you can him/her to the services admin list by :
/MSG OperServ ADMIN ADD <nick>
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Regards
[Edited on 18-4-2007 by dNetGuru]
[Edited on 18-4-2007 by dNetGuru]