can't share on net

I just install the 0.9.5 on my 2008 R2. set the port 8080, but when I access the website, error page is 500 Internal Server Error, error: bad character in group name.

I test the server in Calibre, looks the error is socket can't generated.

what's happened? how can I do?

I uninstall the IIS, error still the same.

do appreciate who can help me solve this prob

Thank