ErrCode = 7504

Hi,

I am using syntellect 8.0 PRC11 in combination with HMP 3.0 Win 338. I am trying to send an Sip Options message, but keep getting the following error:

2013-03-14 14:45:39 Ch =     4  ErrCode = 7504
Descr = Dialogic Boards Driver
Block = Dialogic Driver Error! Invalid parameter gc_Extension IPEXTID_SENDMSG/IPSET_MSG_SIP on targetId=6 failed with code = -1.
Script= VoIP Sending SIP message [0F0A3E61]

Any ideas anyone?