I guess it would be hard for for you to actaully send the server. But one thing to check out for is if the event prototypes generated by CVI match those that the server has specified. If the server is registered on your machine, you can use the OLE/COM Viewer ( its one of the tools provided with Visual Studio 6.0, can be found
here) to view the event interface. You can see CVI's generated interface in Srv.c and see if they match up.
A problem like this did show up in CVI , but I cant be certain if this is indeed the same problem, without actaully having the COM server to test it out.
Bilal
Bilal Durrani
NI