Wrong paths?

I just installed the script. Besides that the ffmpeg isn't working (my host is working on that) it looks like the url paths are incorrect. When a user register himself and he wants to go to a member profile (mydomain.com/username)it returns a page which says the page cannot be found.
It's the same story for the channel pages (.com/channel/14/funny).

How can I solve this problem?

You have not uploaded .htaccess file provided with vshare. Upload the file, it will work.

ok, thanks.. I'm working with apple.. apple doesn't show .htaccess files when I unpack the vshare package. I can browse! yeah..