I'm really sorry to hear about that happening.  It is the first time I've ever heard of that happening.  I really don't think it is the plugin that did it.  I think it is just coincidence.  It uses the same loading mechanism as Mach3.  The signature is a CRC, and the bootloader is evidently corrupt.  Can you run Mach3?  I'll get this fixed for you.  Please contact me at support@warp9td.com if the problem persists.
Greg