Sorry for top replying, I had mail delivery disabled from the mailing list options and had to read replies on the archives. With vsthost you don't usually need the full path, it looks in $VST_PATH I think which has /home/renato/Audio/.vst. And anyways other windows vsts in that directory launch correctly, so I wouldn't say it's a path problem. Neither an architecture problem as far as I can see, since as said I tried putting in the directory both 64bit and 32bit versions of Kontakt. Is there no one on the list with Kontakt working? I'd *really* like it to gain acces to some libraries cheers, Renato