4.02 runs on Vista.
They even ran it on a Vista 64bit system.
MTU wanted 4.0 to be Vista ready but the beast had been hard to tame.
The beta team is working hard to find every bug in Hoster but it's a complex program and we are not perfect. Usually any bug that is reported, is gone in the next release but Vista has presented a whole bunch of new issues.
There will be lots of versions of Hoster 4 released for free before MTU gets it where they want it to be. Be ready, Hoster 4 is going to change the face of karaoke hosting programs, in my opinion.
The download link for Hoster 4.02 is delivering 4.01 right now. This will change in a bit, hang in there.
Jim