jorg
Have a look at this:
http://www.rgcaudio.com/sfzfaq.htm

In my case, memory is a factor. It works with Muse Receptor because
1. It is a host
2. I have 2 gigs of ram

When loading at 32, it takes too much memory for my pc, which hasn't enough . I am going to try 16. Also it mentions a host in FAQ. Maybe it is not working as a stand alone.

Later
Bernie