coffimplib error with libmysql.dll under windows

[Tim Keating]

I have been trying to convert the MySQL DLL on Windows to OMF format using
coffimplib so I can use it in D. When I run the tool, it invariably gives me an
error: "missing archive signature". I can't fathom what this means, and I can't
get the tool to give me any kind of meaningful output. Anyone have any thoughts
as to what I'm doing wrong here?

Thanks!
TK