From what I've read on this thread, you'll need to set computer-wide DCOM security permissions. You'll want to peruse that thread.
On another note, this isn't really the best spot for this question. An error message isn't a crash, hang or bsod, and the situation is more relevant to specifically the Windows Server section (even though OPC servers can and often do exist in many client versions of Windows). You'll be able to receive more help there, as it's pertinent to your needs.
On another note, this isn't really the best spot for this question. An error message isn't a crash, hang or bsod, and the situation is more relevant to specifically the Windows Server section (even though OPC servers can and often do exist in many client versions of Windows). You'll be able to receive more help there, as it's pertinent to your needs.
